List of United States divisions during World War II

The following is a list of U.S. Army and U.S. Marine Corps divisions of World War II. The United States began the war with only a handful of active divisions: five infantry and one cavalry. By the end of the war, the nation had fielded nearly one hundred. The number of divisions fielded by the United States Army in relation to the population and industrial capacity of the country and in comparison to the number of divisions fielded by various other Allied and Axis countries, has been called "the 90-Division Gamble".<ref>Template:Cite book</ref> Due to the US Army's method of employment combined with events of the war, the United States did not suffer the destruction of any of its division-size units during the conflict, except for the Philippine Division in 1942.

Some divisions were "constituted" (placed on the rolls of the Army and contemplated for organization) but never activated, and "phantom" units were also "raised" on paper during the war to confuse the Germans.

United States Army Divisions

The 82nd Airborne Division was originally the 82nd Infantry Division of the Organized Reserve, and after being ordered into active military service on 25 March 1942, was converted to an airborne division on 15 August 1942. The 101st Infantry Division was disbanded in the Organized Reserve on 15 August 1942, and was concurrently reconstituted and activated as an airborne division on the same date.

The 15th Airborne Division was constituted, but never activated. It was dropped from the mobilization program in 1943.

Airborne Divisions

Airborne Divisions
Shoulder Sleeve Insignia	Name	Headquarters organized Ordered into active military service or activated	Entered Combat	Days in Combat	Commanding General	Campaigns
	11th Airborne Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 25 February 1943 || 18 November 1944 || 204 || Maj. Gen. Joseph M. Swing || New Guinea Southern Philippines Luzon
	13th Airborne Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 13 August 1943 || No combat || - || Maj. Gen. Elbridge G. Chapman || -
	17th Airborne Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 April 1943 || 25 December 1944 || 45 || Maj. Gen. William M. Miley || Ardennes-Alsace Rhineland Central Europe
	82nd Airborne Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 23 September 1921 25 March 1942 || 9 July 1943 || 422 || Maj. Gen. Matthew B. Ridgway Maj. Gen. James M. Gavin || Sicily Naples-Foggia Normandy Rhineland Ardennes-Alsace Central Europe
	101st Airborne Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 10 September 1921 15 August 1942 || 6 June 1944 || 214 || Maj. Gen. Maxwell D. Taylor Brig. Gen. Anthony C. McAuliffe Maj. Gen. Maxwell D. Taylor || Normandy Rhineland Ardennes-Alsace Central Europe

Armored Divisions

The 19th Armored Division was constituted, but never activated. It was dropped from the mobilization program in 1943.

Armored Divisions
Shoulder Sleeve Insignia	Name	Activated	Entered Combat	Days in Combat	Commanding General	Campaigns
	1st Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1940 || 8 November 1942 || 360 || Maj. Gen. Orlando Ward Maj. Gen. Ernest N. Harmon Maj. Gen. Vernon E. Prichard	Algeria-French Morocco Tunisia Naples-Foggia Anzio Rome-Arno North Apennines Po Valley
	2nd Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1940 || 8 November 1942 || 443 || Maj. Gen. Hugh J. Gaffey Maj. Gen. Edward H. Brooks Maj. Gen. Ernest N. Harmon Maj. Gen. Isaac D. White || Algeria-French Morocco Sicily Normandy Northern France Rhineland Ardennes-Alsace Central Europe
	3rd Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 April 1941 || 9 July 1944 || 231 || Maj. Gen. Leroy H. Watson Maj. Gen. Maurice Rose(KIA) Brig. Gen. Doyle O. Hickey || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
	4th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 April 1941 || 28 July 1944 || 230 || Maj. Gen. John S. Wood Maj. Gen. Hugh J. Gaffey Col. Walter A. Bigby Brig. Gen. Holmes E. Dager Maj. Gen. Hugh J. Gaffey Maj. Gen. William M. Hoge || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
	5th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 10 October 1941 || 2 August 1944 || 161 || Maj. Gen. Lunsford E. Oliver || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:6th US Armored Division SSI.svg	6th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 February 1942 || 28 July 1944 || 272 || Maj. Gen. Robert W. Grow Brig. Gen. George W. Read Jr. || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:7th US Armored Division SSI.svg	7th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 March 1942 || 14 August 1944 || 172 || Maj. Gen. Lindsay M. Silvester Maj. Gen. Robert W. Hasbrouck || Northern France Rhineland Ardennes-Alsace Central Europe
File:8th US Armored Division SSI.svg	8th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 April 1942 || 23 February 1945 || 63 || Maj. Gen. John M. Devine || Ardennes-Alsace Rhineland Central Europe
File:9th US Armored Division SSI.svg	9th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1942 || 16 December 1944 || 91 || Maj. Gen. John W. Leonard || Ardennes-Alsace Rhineland Central Europe
File:10th US Armored Division SSI.svg	10th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1942 || 1 November 1944 || 124 || Maj. Gen. William H. H. Morris Jr. || Rhineland Ardennes-Alsace Central Europe
File:11th US Armored Division SSI.svg	11th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 August 1942 || 23 December 1944 || 96 || Brig. Gen. Charles S. Kilburn Maj. Gen. Holmes E. Dager || Ardennes-Alsace Rhineland Central Europe
File:12th U.S. Armored Division CSIB.svg	12th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 September 1942 || 7 December 1944 || 102 || Maj. Gen. Roderick R. Allen || Rhineland Central Europe
File:13th US Armored Division SSI.svg	13th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 October 1942 || 10 April 1945 || 16 || Maj. Gen. John B. Wogan Maj. Gen. John Millikin || Rhineland Central Europe
File:14th US Armored Division SSI.svg	14th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 November 1942 || 20 November 1944 || 167 || Maj. Gen. Albert C. Smith || Rhineland Central Europe
File:16th US Armored Division SSI.svg	16th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1943 || 5 May 1945 || 3 || Brig. Gen. John L. Pierce || Central Europe
File:20th US Armored Division SSI.svg	20th Armored Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 March 1943 || 24 April 1945 || 8 || Maj. Gen. Orlando Ward || Central Europe

Cavalry Divisions

Cavalry Divisions
Shoulder Sleeve Insignia	Name	Activated	Entered Combat	Days in Combat	Commanding General	Campaigns
File:1st Cavalry Division SSI (full color).svg	1st Cavalry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 31 August 1921 || 29 February 1944 || 521 || Maj. Gen. Verne D. Mudge Brig. Gen. Hugh F. T. Hoffman Maj. Gen. William C. Chase || New Guinea Bismarck Archipelago Leyte Luzon
File:US 2nd Cavalry Division.svg	2nd Cavalry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 April 1941 25 February 1943 as segregated division || No combat || - || Brig. Gen. Terry de la Mesa Allen Sr. Brig. Gen. John Millikin Brig. Gen. John B. Coulter Maj. Gen. Harry H. Johnson || 1st inactivation: 15 July 1942 2nd inactivation: 10 May 1944

Infantry Divisions

1st to 25th

Infantry divisions were initially titled with their numerical designation and "division" (e.g., "1st Division"). In August 1941, the War Department issued a statement that divisions' names were to represent their major arm of service (i.e., armored, cavalry, or infantry) to avoid confusion as several divisions of different arms now shared the same number. Some divisions issued general orders introducing "infantry" as an official part of their names, but this change was not added to the table of organization of the infantry division, which technically controlled its naming conventions, until 1 August 1942.<ref>Template:Cite book</ref>

The 1st through 25th Infantry Divisions, excepting the 10th Mountain Division, were raised in the Regular Army or the Army of the United States prior to American involvement in World War II. Because of funding cuts, in September 1921, the 4th through 9th Infantry Divisions were mostly inactivated. Within a few years, the headquarters of the 1st and 3rd Infantry Divisions "almost ceased to exist. Only the division commander and a few staff officers remained to carry out minimal division administrative functions, and neither division exercised true command functions over their units." The 2nd Infantry Division remained the most functional stateside division, as it was concentrated entirely at Fort Sam Houston, Texas. By the mid-1920s, most of the divisions' inactive units were staffed with Organized Reserve officers as "Regular Army Inactive" units.

The Hawaiian Division, "which was the closest thing to a full-strength division in the interwar American Army." was split on 1 October 1941 to create the 24th and 25th Infantry Divisions. The 24th Infantry Division headquarters inherited the lineage of the Hawaiian Division's headquarters, while the 25th Infantry Division was raised in the Army of the United States.

The 10th Mountain Division was raised in the Army of the United States in 1943.

Infantry Divisions
Shoulder Sleeve Insignia	Name	Activated	Entered Combat	Days in Combat	Commanding General	Campaigns
File:1st Infantry Division SSI (1918-2015).svg	1st Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 17 May 1917 || 8 November 1942 || 443 || Maj. Gen. Terry de la Mesa Allen Sr. Maj. Gen. Clarence R. Huebner Maj. Gen. Clift Andrus || Algeria-French Morocco Tunisia Sicily Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:2nd Infantry Division SSI (full color).svg	2nd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 26 October 1917 || 12 June 1944 || 303 || Maj. Gen. Walter M. Robertson || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:3rd Infantry Division SSI (1918-2015).svg	3rd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 12 November 1917 || 8 November 1942 || 536 || Maj. Gen. Jonathan W. Anderson Maj. Gen. Lucian K. Truscott Jr. Maj. Gen. John W. O'Daniel || Algeria-French Morocco<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> Sicily Naples-Foggia Anzio Rome-Arno Southern France Rhineland Ardennes-Alsace Central Europe
File:4th Infantry Division SSI.svg	4th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 10 December 1917 3 June 1940 || 6 June 1944 || 299 || Maj. Gen. Raymond O. Barton Maj. Gen. Harold R. Bull Brig. Gen. James A. Van Fleet Maj. Gen. Harold W. Blakeley || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:US 5th Infantry Division.svg	5th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 11 December 1917 2 October 1939 || 16 July 1944 || 270 || Maj. Gen. Stafford LeRoy Irwin Maj. Gen. Albert E. Brown || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:6th Infantry Division.svg	6th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || November 1917 12 October 1939 || 14 June 1944 || 306 || Maj. Gen. Franklin C. Sibert Maj. Gen. Edwin D. Patrick(KIA) Maj. Gen. Charles E. Hurdis || New Guinea Luzon
File:7th Infantry division Shoulder Sleve insignia.png	7th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 6 December 1917 1 July 1940 || 11 May 1943 || 208 || Maj. Gen. Eugene M. Landrum Maj. Gen. Archibald V. Arnold Maj. Gen. Charles H. Corlett || Aleutian Islands Eastern Mandates Leyte Ryukyus
File:8th Infantry Division patch.svg	8th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || January 1918 1 July 1940 || 8 July 1944 || 266 || Maj. Gen. William C. McMahon Maj. Gen. Donald A. Stroh Maj. Gen. William G. Weaver Maj. Gen. Bryant E. Moore || Normandy Northern France Rhineland Central Europe
File:9th Infantry Division patch.svg	9th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 18 July 1918 1 August 1940 || 8 November 1942 || 304 || Maj. Gen. Manton S. Eddy Maj. Gen. Louis A. Craig || Algeria-French Morocco Tunisia Sicily Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:Shoulder sleeve insignia of the 10th Mountain Division (1944-2015).svg	10th Mountain Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1943 || 8 January 1945 || 114 || Maj. Gen. George P. Hays || North Apennines Po Valley
File:US 11th Infantry Division.svg	11th Infantry Division	1918 1941 (phantom in WWII)	Did not see combat	–	–	–
File:24 Infantry Division SSI.svg	24th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 25 February 1921 (as Hawaiian Division) 1 October 1941 (as 24th Infantry Division) ||7 December 1941 (22 April 1944 was the first offensive action of the division)|| 210 || Maj. Gen. Frederick A. Irving Maj. Gen. Roscoe B. Woodruff || Central Pacific New Guinea<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> Leyte Luzon Southern Philippines
File:25th Infantry Division CSIB.svg	25th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 October 1941 ||7 December 1941 (10 January 1943 was the first offensive action of the Division) || 165 (consecutive days; exact unknown)|| Maj. Gen. J. Lawton Collins Maj. Gen. Charles L. Mullins Jr. || Central Pacific<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> Guadalcanal Northern Solomons Luzon

26th to 45th

The 26th through 45th Divisions, with the exception of the 39th and 42nd Divisions, were raised in the National Guard during and after World War I. In postwar mobilization plans, the 26th through 45th Divisions, less two, were allotted to the National Guard. The 30th, 31st, and 39th Divisions had been organized in what would become the states of the Fourth Corps Area; the designations of the 30th and 39th Divisions were originally selected, with the 31st Division being deleted. In 1923, the adjutants general of the states concerned successfully requested that the War Department change the designation of the 39th Division to the 31st Division and adjust allotments of units accordingly. The 42nd Division was the second division deleted from the mobilization program as it had contained units from twenty-six states and the District of Columbia, although it would be reconstituted during the war as a division in the Army of the United States.<ref>Template:Cite book</ref>

Infantry Divisions
Shoulder Sleeve Insignia	Name (National Guard units from)	Headquarters organized Ordered into federal service	Entered Combat	Days in Combat	Commanding General	Campaigns
File:Yankee Division.svg	26th Infantry Division (Massachusetts)<ref name="National Guard">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 21 March 1923 16 January 1941 || 12 October 1944 || 210 || Maj. Gen. Willard S. Paul || Northern France Rhineland Ardennes-Alsace Central Europe
File:27th Infantry Division SSI.svg	27th Infantry Division (New York)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 23 December 1921 15 October 1940 || 21 November 1943 || 110 || Maj. Gen. Ralph C. Smith Maj. Gen. George W. Griner Jr. || Central Pacific Eastern Mandates Western Pacific Ryukyus
File:28th Infantry Division SSI.svg	28th Infantry Division (Pennsylvania)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 22 December 1921 17 February 1941 || 27 July 1944 || 196 || Maj. Gen. Lloyd D. Brown Brig. Gen. James E. Wharton(KIA) Maj. Gen. Norman D. Cota || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:29 Inf SSI.svg	29th Infantry Division (District of Columbia, Maryland, Pennsylvania, and Virginia)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 31 July 1923 3 February 1941 || 6 June 1944 || 242 || Maj. Gen. Charles H. Gerhardt || Normandy Northern France Rhineland Central Europe
File:30th Infantry Division SSI.svg	30th Infantry Division (Georgia, North Carolina, South Carolina, and Tennessee)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 24 August 1926 16 September 1940 || 15 July 1944 || 282 || Maj. Gen. Leland S. Hobbs || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:31st ID SSI.svg	31st Infantry Division (Alabama, Florida, Louisiana, and Mississippi)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 October 1924 25 November 1940 || 3 July 1944 || 245 || Maj. Gen. John C. Persons Maj. Gen. Clarence A. Martin || New Guinea Southern Philippines
File:32nd infantry division shoulder patch.svg	32nd Infantry Division (Michigan and Wisconsin)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 24 July 1924 15 October 1940 || 2 October 1942 || 654 || Maj. Gen. Edwin F. Harding Maj. Gen. William H. Gill || Papua<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> New Guinea Leyte Luzon
File:33rd Infantry Division SSI.svg	33rd Infantry Division (Illinois)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 13 December 1923 5 March 1941 || 1 September 1944 || 139 || Maj. Gen. Percy W. Clarkson || New Guinea Luzon
File:34th 'Red Bull' Infantry Division SSI.svg	34th Infantry Division (Iowa, Minnesota, North Dakota, and South Dakota)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 14 July 1924 10 February 1941 || 8 November 1942 || 517 (Some elements credited with over 600)|| Maj. Gen. Charles W. Ryder Maj. Gen. Charles L. Bolte || Algeria-French Morocco Tunisia Naples-Foggia Anzio Rome-Arno North Apennines Po Valley
File:35th Infantry Division SSI.svg	35th Infantry Division (Kansas, Missouri, and Nebraska)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 13 September 1935 23 December 1940 || 11 July 1944 || 264 || Maj. Gen. Paul W. Baade || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:36th Infantry Division CSIB.svg	36th Infantry Division (Texas)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 2 May 1923 25 November 1940 || 9 September 1943 || 400 || Maj. Gen. Fred L. Walker Maj. Gen. John E. Dahlquist || Naples-Foggia Anzio Rome-Arno Southern France Rhineland Central Europe
File:37th Infantry Division CSIB.svg	37th Infantry Division (Ohio)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 31 May 1923 15 October 1940 || 5 July 1943 || 592 || Maj. Gen. Robert S. Beightler || Northern Solomons Luzon
File:38th Infantry Division SSI.svg	38th Infantry Division (Indiana, Kentucky, and West Virginia)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 16 March 1923 17 January 1941 || 11 July 1944 || 210 || Maj. Gen. Henry L. C. Jones Maj. Gen. William C. Chase Maj. Gen. Frederick A. Irving || New Guinea<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> Leyte Luzon
File:40th Infantry Division CSIB.svg	40th Infantry Division (California, Nevada, and Utah)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 18 June 1926 3 March 1941 || 24 April 1944 || 265 || Maj. Gen. Rapp Brush Maj. Gen. Donald J. Myers || Bismarck Archipelago Luzon Southern Philippines
File:41st Infantry Division SSI.svg	41st Infantry Division (Idaho, Montana, Oregon, Washington, and Wyoming)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 3 January 1930 16 September 1940 || 2 January 1943 || 380 || Maj. Gen. Horace H. Fuller Maj. Gen. Jens A. Doe || Papua New Guinea Southern Philippines
File:42nd Infantry Division SSI.svg	42nd Infantry Division (The 42nd Infantry Division was a reconstitution of the National Guard's 42nd Division that had fought in World War I, but was raised in the Army of the United States rather than in the National Guard)<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 14 July 1943 || 24 January 1944 || 106 || Maj. Gen. Harry J. Collins || Rhineland Central Europe
File:43rd Infantry Division CSIB.svg	43rd Infantry Division (Connecticut, Maine, Rhode Island, and Vermont)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 21 March 1925 24 February 1941 || 17 February 1943 || 370 || Maj. Gen. John H. Hester Maj. Gen. Leonard F. Wing || Northern Solomons New Guinea Luzon
File:44 INF DIV SSI.svg	44th Infantry Division (Delaware, New Jersey, and New York)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 26 March 1924 16 September 1940 || 24 October 1944 || 190 || Maj. Gen. Robert L. Spragins Maj. Gen. William F. Dean || Northern France Rhineland Central Europe
File:45th Infantry insignia (thunderbird).svg	45th Infantry Division (Arizona, Colorado, New Mexico, and Oklahoma)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 3 August 1923 16 September 1940 || 10 July 1943 || 511 || Maj. Gen. William W. Eagles Maj. Gen. Robert T. Frederick || Sicily Naples-Foggia Anzio Rome-Arno Southern France Rhineland Central Europe
File:Americal patch.svg	Americal Division (Composite task force later reorganized as a division)<ref name="National Guard"/><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 27 May 1942 || 13 October 1942 || 600 || Maj. Gen. Alexander M. Patch Maj. Gen. John R. Hodge Maj. Gen. Robert B. McClure Maj. Gen. William H. Arnold || Guadalcanal Northern Solomons Leyte Southern Philippines

63rd to 89th

After World War I, 33 infantry divisions (the 76th through 104th) were organized as part of the Organized Reserve. They were nominally regional organizations, drawing their officer cadre and a small, nearly insignificant, number of enlisted men from an allotted portion of a state, entire state, or multiple states, similar to National Guard units. Prior to American involvement in World War II, Organized Reserve officers were called to active duty individually and assigned to existing Regular Army and National Guard units. When the Organized Reserve units themselves were called to active duty beginning in 1942, "few of the Reserve officers originally assigned to...units were available for duty with them. Consequently, the units as activated bore small resemblance to those of peacetime."<ref>Template:Cite book</ref>

The 61st, 62nd, 67th, 68th, and 72nd-74th Infantry Divisions were constituted, but never activated. They were dropped from the mobilization program in 1943.

Infantry Divisions
Shoulder Sleeve Insignia	Name	Headquarters organized Ordered into active military service or activated	Entered Combat	Days in Combat	Commanding General	Campaigns
File:63rd Infantry Division SSI.svg	63rd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 June 1943 || 22 December 1944 || 119 || Maj. Gen. Louis E. Hibbs || Rhineland Central Europe
File:65th Infantry Division SVG.svg	65th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 16 August 1943 || 9 March 1945 || 55 || Maj. Gen. Stanley E. Reinhart || Rhineland Central Europe
File:66th Infantry Division shoulder sleeve insignia.jpg	66th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 April 1943 || 1 January 1945 || 91 || Maj. Gen. Herman F. Kramer || Northern France
File:US 69th Infantry Division.svg	69th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 May 1943 || 11 February 1945 || 86 || Maj. Gen. Emil F. Reinhardt || Rhineland Central Europe
File:70th Infantry Division patch.svg	70th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 June 1943 || 3 February 1945 || 83 || Maj. Gen. Allison J. Barnett || Rhineland Central Europe
File:US 71st Infantry Division.svg	71st Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 July 1943 || 12 March 1945 || 62 || Maj. Gen. Willard G. Wyman || Rhineland Central Europe
File:75e Division d'Infanterie (USA).svg	75th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 April 1943 || 25 December 1944 || 94 || Maj. Gen. Fay B. Prickett Maj. Gen. Ray E. Porter || Ardennes-Alsace Rhineland Central Europe
File:76 Inf Div SSI.svg	76th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 September 1921 15 June 1942 || 19 January 1945 || 107 || Maj. Gen. William R. Schmidt || Rhineland Ardennes-Alsace Central Europe
File:77th Infantry Division.patch.jpg	77th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 July 1921 25 March 1942 || 21 July 1944 || 208 || Maj. Gen. Andrew D. Bruce || Western Pacific Leyte Ryukyus
File:78th Infantry Division SSI.svg	78th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 July 1921 15 August 1942 || 13 December 1944 || 125 || Maj. Gen. Edwin P. Parker Jr. || Rhineland Ardennes-Alsace Central Europe
File:79th Infantry Division SSI.svg	79th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 29 September 1921 15 June 1942 || 19 June 1944 || 248 || Maj. Gen. Ira T. Wyche || Normandy Northern France Rhineland Central Europe
File:80th Inf Div SSI SVG.svg	80th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 September 1921 15 July 1942 || 8 August 1944 || 289 || Maj. Gen. Horace L. McBride || Northern France Rhineland Ardennes-Alsace Central Europe
File:US Army 81st Infantry Division SSI.svg	81st Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 23 September 1921 15 June 1942 || 17 September 1944 || 166 || Maj. Gen. Paul J. Mueller || Western Pacific South Philippines
File:83rd Infantry Division SSI.svg	83rd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 27 September 1921 15 August 1942 || 27 June 1944 || 244 || Maj. Gen. Robert C. Macon || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:US 84th Infantry Division.svg	84th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 6 September 1921 15 October 1942 || 18 November 1944 || 170 || Maj. Gen. Alexander R. Bolling || Rhineland Ardennes-Alsace Central Europe
File:85th Division SSI.svg	85th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 10 September 1921 15 May 1942 || 10 April 1944 || 260 || Maj. Gen. John B. Coulter || Rome-Arno North Apennines Po Valley
File:86 Inf Div SSI.jpg	86th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 10 September 1921 15 December 1942 || 29 March 1945 || 34 || Maj. Gen. Harris M. Melasky || Central Europe
File:US 87th Infantry Division.svg	87th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 23 September 1921 15 December 1942 || 13 December 1944 || 134 || Maj. Gen. Frank L. Culin Jr. || Rhineland Ardennes-Alsace Central Europe
File:88th Infantry Division SSI.svg	88th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 2 September 1921 15 July 1942 || 3 January 1944 || 307 || Maj. Gen. John E. Sloan Maj. Gen. Paul W. Kendall || Rome-Arno North Apennines Po Valley
File:89th Regional Readiness Command SSI.svg	89th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 2 September 1921 15 July 1942 || 12 March 1945 || 57 || Maj. Gen. Thomas D. Finley || Rhineland Central Europe

90th to 106th

The 105th and 107th Infantry Divisions were constituted, but never activated. They were intended as additional segregated African American divisions. They were dropped from the mobilization program in 1943.

Infantry Divisions
Shoulder Sleeve Insignia	Name	Activated	Entered Combat	Days in Combat	Commanding General	Campaigns
File:90th Infantry Division.patch.svg	90th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 8 August 1921 25 March 1942 || 6 June 1944 || 307 || Brig. Gen. Jay W. MacKelvie Maj. Gen. Eugene M. Landrum Maj. Gen. Raymond S. McLain Maj. Gen. James A. Van Fleet Maj. Gen. Lowell Ward Rooks Maj. Gen. Herbert L. Earnest || Normandy Northern France Rhineland Ardennes-Alsace Central Europe
File:US 91st Infantry Division.svg	91st Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || November 1921 15 August 1942 || 12 July 1944 || 271 || Maj. Gen. William G. Livesay || Rome-Arno North Apennines Po Valley
File:US 92nd Infantry Division SVG.svg	92nd Infantry Division (Segregated division)<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 October 1942 || 24 August 1944 || 200 || Maj. Gen. Edward M. Almond || North Apennines Po Valley
File:US 93rd Infantry Division.png	93rd Infantry Division (Segregated division)<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 May 1942 || 30 March 1944 || 133 || Maj. Gen. Raymond G. Lehman Maj. Gen. Harry H. Johnson || New Guinea Northern Solomons Bismarck Archipelago
File:94th Regional Readiness Command SSI.svg	94th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || November 1921 15 September 1942 || 17 September 1944 || 209 || Maj. Gen. Harry J. Malony || Northern France Rhineland Ardennes-Alsace Central Europe
File:95TrainingDivSSI SVG.svg	95th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 31 August 1921 15 July 1942 || 20 October 1944 || 151 || Maj. Gen. Harry L. Twaddle || Northern France Rhineland Central Europe
File:96th Infantry Division SSI.svg	96th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 7 October 1921 15 August 1942 || 20 October 1944 || 200 || Maj. Gen. James L. Bradley || Leyte Ryukyus
File:97THID.svg	97th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || December 1921 25 February 1943 || 1 April 1945 || 41 || Maj. Gen. Milton B. Halsey || Central Europe
File:98th Infantry Division shoulder sleeve insignia.svg	98th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 18 August 1921 15 September 1942 || No combat || - || Maj. Gen. George W. Griner Jr. Maj. Gen. Ralph C. Smith || -
File:US 99th Infantry Division.svg	99th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || November 1921 15 November 1942 || 9 November 1944 || 151 || Maj. Gen. Walter E. Lauer || Rhineland Ardennes-Alsace Central Europe
File:100th Infantry Division SSI.svg	100th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 27 September 1921 15 November 1942 || 9 November 1944 || 163 || Maj. Gen. Withers A. Burress || Rhineland Central Europe
File:102 INF DIV SSI.svg	102nd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 2 September 1921 15 September 1942 || 26 November 1944 || 173 || Maj. Gen. Frank A. Keating || Rhineland Central Europe
File:US 103rd Infantry Division.svg	103rd Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 31 August 1921 15 November 1942 || 11 November 1944 || 147 || Maj. Gen. Charles C. Hoffner Jr. Maj. Gen. Anthony C. McAuliffe || Rhineland Central Europe
File:104TrngDivLdrTrngSSI.svg	104th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 7 October 1921 15 September 1942 || 24 October 1944 || 200 || Maj. Gen. Terry de la Mesa Allen Sr. || Northern France Rhineland Central Europe
File:106Infantry Division.svg	106th Infantry Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 15 March 1943 || 10 December 1944 || 63 || Maj. Gen. Alan W. Jones Brig. Gen. Herbert T. Perrin Maj. Gen. Donald A. Stroh || Ardennes–Alsace Rhineland Central Europe
File:12th Infantry Division SSI.svg	Philippine Division<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 8 June 1921 || 8 December 1941 || 124 || Maj. Gen. Jonathan M. Wainwright Brig. Gen. Maxon S. Lough || Philippine Islands (surrendered 10 April 1942)

United States Marine Corps Divisions

Marine Divisions
Shoulder Sleeve Insignia	Name	Activated	Entered Combat	Days in Combat	Commanding General	Campaigns
File:US 1st Marine Division SSI.svg	1st Marine Division<ref name="Battle Honors">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1 February 1941 || 7 August 1942 || 265 || Maj. Gen. Alexander Vandegrift Maj. Gen. William H. Rupertus Maj. Gen. Pedro del Valle Maj. Gen. DeWitt Peck || Guadalcanal-Tulagi landings Capture and defense of Guadalcanal Cape Gloucester, New Britain Capture and occupation of southern Palau Islands Assault and occupation of Okinawa Gunto
File:US 2d Marine Division SSI.svg	2nd Marine Division<ref name="Battle Honors"/>	1 February 1941	4 January 1943	89	Maj. Gen. Charles F. B. Price Maj. Gen. John Marston Maj. Gen. Julian C. Smith Maj. Gen. Thomas E. Watson Maj. Gen. LeRoy P. Hunt	Capture and defense of Guadalcanal Gilbert Islands (Tarawa) operation Capture and occupation of Saipan Capture and occupation of Tinian Assault and occupation of Okinawa Gunto
File:US 3d Marine Division SSI.svg	3rd Marine Division<ref name="Battle Honors"/>	16 September 1942	1 November 1943	104	Maj. Gen. Charles D. Barrett Maj. Gen. Allen H. Turnage Maj. Gen. Graves B. Erskine	Occupation and defense of Cape Torokina Consolidation of Northern Solomons Capture and occupation of Guam Assault and occupation of Iwo Jima
File:4THMARDIV.svg	4th Marine Division<ref name="Battle Honors"/>	16 August 1943	31 January 1944	71	Brig. Gen. James L. Underhill Maj. Gen. Harry Schmidt Maj. Gen. Clifton B. Cates	Occupation of Kwajalein and Majuro Atolls Capture and occupation of Saipan Capture and occupation of Tinian Assault and occupation of Iwo Jima
File:US 5th Marine Division SSI.svg	5th Marine Division<ref name="Battle Honors"/>	21 January 1944	19 February 1945	36	Maj. Gen. Keller E. Rockey Maj. Gen. Thomas E. Bourke	Assault and occupation of Iwo Jima
File:6th MarDiv.png	6th Marine Division<ref name="Battle Honors"/>	7 September 1944	1 April 1945	citation	CitationClass=web }}</ref> || Maj. Gen. Lemuel C. Shepherd Jr. || Assault and occupation of Okinawa Gunto

See also

Allies:

• List of Australian divisions in World War II
• List of British divisions in World War II
• List of Canadian divisions in World War II
• List of French divisions in World War II
• List of Indian divisions in World War II
• List of Polish divisions in World War II
• List of Soviet divisions 1917–45

Axis:

• List of Finnish divisions in the Continuation War
• List of German military units of World War II
• List of Italian divisions in World War II
• List of Japanese Infantry divisions

References

<references/>

External links

• The Combat Chronicles of United States Army Divisions in World War II compiled by the United States Army Center of Military History