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{{Short description|World War 2 British naval squadron}}
{{Use British English|date=December 2013}}{{Use dmy dates|date=February 2023}}
{{More citations needed|date=December 2008}}

{{Infobox military unit
|unit_name=Force H
|image=Force H off Gibraltar Rowland Lang hc1582 large.jpg
|image_size=250px
|caption=Force H off Gibraltar in 1940 by [[Rowland Langmaid]]
|dates=1940–1943
|country={{flag|United Kingdom}}
|allegiance=
|branch={{navy|United Kingdom}}
|type=
|role=
|size=
|command_structure=
|current_commander=
|ceremonial_chief=
|colonel_of_the_regiment=
|nickname=
|patron=
|motto=
|colors=
|march=
|mascot=
|battles=[[Battle of the Mediterranean]]<br />[[Attack on Mers-el-Kébir]]<br />[[Battle of Cape Spartivento]]<br/>[[Last battle of Bismarck]]
|notable_commanders=[[James Fownes Somerville|Vice-Admiral Sir James Somerville]] (July 1940 – March 1942)<br />[[Edward Neville Syfret|Edward Syfret]] (March 1942 – 1943)
|anniversaries=
}}

'''Force H''' was a [[Royal Navy|British naval]] formation during the [[World War II|Second World War]]. It was formed in late-June 1940, to replace French naval power in the western [[Mediterranean]] removed by the French [[Second Armistice at Compiègne|armistice]] with [[Nazi Germany]]. The force occupied an odd place within the naval [[command hierarchy|chain of command]]. Normal British practice was to have naval stations and fleets around the world, whose commanders reported to the [[First Sea Lord]] via a [[flag officer]]. Force H was based at [[Gibraltar]] but there was already a flag officer at the base, Flag Officer Commanding, North Atlantic. The commanding officer of Force H did not report to this Flag Officer but directly to the First Sea Lord, [[Admiral of the Fleet (Royal Navy)|Admiral of the Fleet]] [[Sir Dudley Pound]].

== Hunt for the ''Admiral Graf Spee'' ==
In anticipation of the outbreak of World War 2 on 3 September 1939 the German [[Kriegsmarine]] had already deployed the two heavy cruisers {{ship|German cruiser|Admiral Graf Spee||2}} and {{ship|German cruiser|Deutschland||2}} as [[Commerce raiding|commerce raiders]] in the North and South Atlantic. When these ships started operating against British and French ships in October 1939, the British and French navy responded by forming eight hunting groups, named Force F, G, H, I and Force K, L, M and N. These forces were composed of cruisers, fast battlecruisers and airplane carriers. Force H was stationed in [[Cape of Good Hope]] and was composed of the British heavy cruisers {{HMS|Sussex|96|2}} and {{HMS|Shropshire||2}}. By December 1939 ''Deutschland'' had returned to German port and the ''Admiral Graf Spee'' was found by Force G, damaged in the [[Battle of the River Plate]] and subsequently scuttled at [[Montevideo]]. With the threat of German raiders gone, the hunting groups were disbanded and Force H ceased to exist.{{Sfn|Stephen|1988|pp=10-28}}

==Operation Catapult==

{{Main|Attack on Mers-el-Kébir}}

The [[Armistice of 22 June 1940|surrender of France]] created a void in the Western Mediterranean. On 27 June [[Vice admiral]] [[James Somerville]] was appointed as commander of Force H stationed In Gibraltar. It was an independend command directly responsible to the Admiralty in London. The first operation that Force H took part in was connected with the reason for its formation. French naval power still existed in the [[Mediterranean]], and the British Government viewed it as a threat to British interests. It was feared that the Vichy government of [[Philippe Pétain]] would hand the ships over to Germany, despite a vow that that would never happen. This would almost certainly tip the balance decisively against Britain in the Mediterranean. Consequently, Force H was ordered to execute [[Attack on Mers-el-Kébir|Operation Catapult]].{{Sfn|Taylor|2012|pp=166-167}}

The most powerful of the remaining French forces was in port at [[Mers-el-Kébir]] in [[Algeria]]. It consisted of the French battleships {{Ship|French battleship|Strasbourg||2}}, {{Ship|French battleship|Dunkerque||2}}, {{Ship|French battleship|Bretagne||2}} and {{Ship|French battleship|Provence||2}}, and six destroyers. Force H steamed to off the Algerian coast, and an envoy was sent to the French commander. Various terms were offered, including internment of the fleet in a neutral country, joining the British forces, or [[scuttling]] the fleet at its berths.{{Sfn|Taylor|2012|pp=167-168}} However, the commander of the French forces reported only the scuttling option to his superiors, and was consequently ordered to fight the British. The reasons for the omission have been debated by many. It is often thought that the anti-British bias of the French commander was to blame.{{citation needed|date=November 2021}} The result of the action was that ''Dunkerque'' and ''Provence'' were damaged and put out of action, ''Bretagne'' was destroyed with heavy loss of life, but ''Strasbourg'' and four destroyers could escape to [[Toulon]], a French base on the Mediterranean coast of metropolitan France.{{Sfn|Taylor|2012|pp=168-169}}

==Convoy operations==
{{main|Malta Convoys}}
After this unpleasant operation, Force H settled down to its more normal operations. These involved general naval tasks in the western basin of the Mediterranean. Prominent amongst these tasks was fighting [[convoy]]s through to [[Malta]]. The early convoys came through with relatively light losses. That changed in 1941, when the Germans sent the ''[[Luftwaffe]]''{{'}}s [[10th Air Corps (Germany)|X. ''Fliegerkorps'']] to [[Sicily]]; its bombers took a high toll of both warships and merchantmen. Also, from 1942 the improved combat efficiency of the [[Regia Aeronautica]] (and especially of its [[Savoia-Marchetti SM.79|SM.79]] [[torpedo bomber]]s) and of the [[Regia Marina]]'s submarines posed a far greater threat to these convoys than the 1940 Italian opposition.

In November 1940, screening convoys to Malta, Force H made an important contribution to [[Operation MB8]], and the resulting success of [[Battle of Taranto|Operation Judgement]], the attack on Taranto harbour.{{Sfn|Stephen|1988|pp=37-38}}

=="Sink the ''Bismarck''!"==
{{main|Battle of the Denmark Strait|Last battle of the battleship Bismarck}}
The most famous incident involving Force H in 1941 did not occur in the Mediterranean, but in the [[Atlantic Ocean]]. The German battleship {{Ship|German battleship|Bismarck||2}} had sailed in company with the heavy cruiser {{Ship|German cruiser|Prinz Eugen||2}} to attack commercial shipping. She went far to the north of the UK, passing southwest through the [[Denmark Strait]] between [[Iceland]] and [[Greenland]]. There, she was intercepted by a British force made up of the battleship {{HMS|Prince of Wales|53|2}} and the battlecruiser {{HMS|Hood|51|2}}. The engagement was a disaster for the [[Royal Navy]]; ''Prince of Wales'' was damaged and ''Hood'''s magazine exploded, breaking the ship in half. Only three out of 1,418 crew aboard were rescued from the sinking. Every Royal Navy unit available was then given the task of destroying ''Bismarck''.

[[File:H.M.S. Renown and Ark Royal.jpg|thumb|HMS ''Renown'' and HMS ''Ark Royal'' operating at sea in Force H. Photo taken from HMS ''Sheffield''.]]
Force H set sail from Gibraltar to intercept ''Bismarck'' with the aircraft carrier {{HMS|Ark Royal|91|2}}, the battlecruiser {{HMS|Renown|1916|2}} and the light cruiser {{HMS|Sheffield|C24|2}}. ''Bismarck'' had not come out of the Denmark Strait engagement completely unscathed: a shell from ''Prince of Wales'' had ruptured the ship's fuel tanks, causing her to lose oil. The commerce-raiding cruise was thus cut short, and the ship headed for the port of [[Brest, France|Brest]] in occupied France. ''Bismarck'' was temporarily lost to the Royal Navy after she evaded the radar of the shadowing cruisers {{HMS|Suffolk|55|2}} and {{HMS|Norfolk|78|2}}. She was found again, but the only way of stopping her was if something slowed the ship down. To try to do this, ''Ark Royal'' launched a strike with her [[Fairey Swordfish]] torpedo bombers. However, the aircrews were wrongly informed of the location of ''Sheffield'' and attacked her instead, mistaking her for ''Bismarck''. The torpedoes that the Swordfish had dropped carried a new type of magnetic detonator which proved too unreliable. A second strike was flown carrying the older, and more reliable, contact detonator. ''Bismarck'' was found and a torpedo jammed her steering gear. Unable to evade the British ships closing in, the German battleship was scuttled following incapacitating battle damage dealt by a force including {{HMS|King George V|41|2}} and {{HMS|Rodney|29|2}}.

==Britain at rock bottom==
The end of 1941 saw the nadir of British naval fortunes in the Mediterranean. The Mediterranean Fleet lost the services of [[HMS Illustrious (87)#Service in the Pacific Ocean|HMS ''Illustrious'']] to bomb damage, [[HMS Barham (04)#Sinking|HMS ''Barham'']] was sunk off [[Crete]] by {{GS|U-331||2}}, and its two remaining battleships were put out of action by an Italian [[Raid on Alexandria (1941)|raid on Alexandria]]. Force H in its turn suffered as well: ''Ark Royal'' was [[HMS Ark Royal (91)#Final voyage and sinking|sunk by]] {{GS|U-81|1941|2}} in November 1941. It was only the lack of action by the Italians that prevented a complete disaster for British fortunes. The most urgent task during the first part of the year was [[Siege of Malta (World War II)|supplying Malta]]. The island had been under heavy attack for many months and supply convoys had to be escorted by many ships and aircraft to stand any chance of getting through. Malta was kept from starving but it was very close. [[Operation Pedestal]], the most escorted convoy in the Second World War, delivered enough supplies in August to keep Malta going.

==Amphibious assaults and the end of Force H==
Force H was not actually extant for a portion of 1942. It was stripped bare in May to provide ships for the assault on [[Vichy France|Vichy French]] forces at [[Diego-Suarez|Diego Suarez]] in [[Madagascar]] during [[Battle of Madagascar|Operation Ironclad]].

November saw the turning point of the conflict. [[Operation Torch]] saw British and American forces landed in Morocco and [[French Algeria#During World War II (1940–45)|Algeria]] under the [[First Army (United Kingdom)|British First Army]]. Force H was reinforced to cover these landings. The two main threats were the Italian fleet and French forces. In the end, only French forces fought, and the most significant battles took place at [[Casablanca]] where only American naval units supported the operations.

The end of the [[North African Campaign|campaign in North Africa]] saw an interdiction effort on a vast scale. The aim was to cut [[Tunisia#French Protectorate of Tunisia (1881–1956)|Tunisia]] completely off from Axis support. It succeeded, and 250,000&nbsp;men surrendered to the [[18th Army Group]], a number equal to those who surrendered at [[Stalingrad]]. Force H again provided heavy cover for this operation.

Two further sets of landings were covered by Force H against interference from the Italian fleet. [[Operation Husky]] in July 1943 saw the invasion and conquest of [[Sicily]], and [[Operation Avalanche]] saw an attack on the Italian mainland at [[Salerno]].

Following the Allied landings on Italy itself, the [[Armistice between Italy and Allied armed forces|Italian government surrendered]]. The Italian fleet mostly escaped German capture and much of it formed the [[Italian Co-Belligerent Navy]]. However, two German [[Fritz X]] radio-controlled missiles did hit and sink the battleship {{ship|Italian battleship|Roma|1940|2}}, killing the Commander-in-Chief of the Italian Royal Navy (''[[Regia Marina]]''), [[Admiral]] [[Carlo Bergamini (admiral)|Carlo Bergamini]].

With the surrender of the Italian fleet, the need for heavy units in the Mediterranean disappeared. The battleships and aircraft carriers of Force H dispersed to the [[Home Fleet|Home]] and [[Eastern Fleet]]s and the command was disbanded. Naval operations in the Mediterranean from now on would be conducted by lighter units.

==Battles and operations of Force H==
* [[Attack on Mers-el-Kébir]] The action at Oran – 3 July 1940
* The [[Battle of Calabria]] – 9 July 1940
* The [[Battle of Taranto]] – 11/12 November 1940
* The [[Battle of Cape Spartivento]] – 27 November 1940
* [[Operation Collar (convoy)|Operation Collar]] – November 1940
* [[Operation Excess]] – January 1941
* [[Operation Grog]] – 9 February 1941
* [[Operation Substance]] – July 1941
* [[Operation Halberd]] – September 1941
* [[Operation Ironclad]] as part of Force 121 – March to May 1942
* [[Operation Harpoon (1942)|Operation Harpoon]] – June 1942
* [[Operation Pedestal]] – August 1942
* [[Operation Husky]] – July 1943
* [[Operation Avalanche]] – September 1943

==Major combatant ships in Force H==
* {{HMS|Ark Royal|91|2}}, [[aircraft carrier]] (June 1940 – November 1941)
* {{HMS|Eagle|1918|2}}, aircraft carrier (February–August 1942)
* {{HMS|Hood|51|2}}, [[battlecruiser]] (June–August 1940)
* {{HMS|Renown|1916|2}}, battlecruiser (August 1940 – August 1941, October 1941 – February 1943)
* {{HMS|Resolution|09|2}}, [[battleship]] (June–August 1940)
* {{HMS|Valiant|1914|2}}, battleship (June 1940 – December 1941, June–October 1943)
* {{HMS|Malaya||2}}, battleship (December 1940 – March 1941)
* {{HMS|Nelson|28|2}}, battleship (June–September 1941, August 1942 – November 1943)
* {{HMS|Rodney|29|2}}, battleship (May 1942 – October 1943)
* {{HMS|King George V|41|2}}, battleship (May 1943 – February 1944)
* {{HMS|Enterprise|D52|2}}, [[cruiser]] (June–December 1940)
* {{HMS|Arethusa|26|2}}, cruiser (June 1940 – December 1941)
* {{HMS|Sheffield|C24|2}}, cruiser (August 1940 – October 1941)
* {{HMS|Coventry|D43|2}}, cruiser (August 1940 – September 1942)
* {{HMS|Calcutta|D82|2}}, cruiser (August 1940 – June 1941)
* {{HMS|Berwick|65|2}}, cruiser (November 1940)
* {{HMS|Fiji|58|2}}, cruiser (April–May 1941)
* {{HMS|Hermione|74|2}}, cruiser (June 1941 – March 1942)
* {{HMS|Cairo|D87|2}}, cruiser (January–August 1942)
* {{HMS|Charybdis|88|2}}, cruiser (April–November 1942)
* {{HMS|Argonaut|61|2}}, cruiser (October–December 1942)

==See also==
* [[Battle of the Mediterranean]]
* [[Military history of Gibraltar during World War II]]
* [[Malta Convoys]]
* [[Geoffrey Bennett (historian)|Geoffrey Bennett]]

==Citations==
{{reflist}}

== References ==

* {{Cite book |last=Stephen |first=Martin |title=Sea Battles in close-up: World War 2 |publisher=Ian Allan ltd |year=1988 |isbn=0-7110-1596-1 |editor-last=Grove |editor-first=Eric |location=London}}
* {{Cite book |last=Taylor |first=Bruce |title=The end of glory, war and peace in HMS Hood, 1916-1941 |publisher=Naval Institute Press |year=2012 |isbn=9781591142355 |location=Annapolis, Maryland}}

==External links==
* [https://web.archive.org/web/20120207071444/http://www.admirals.org.uk/records/adm/adm199/adm199-391_7-31.php Transcription of Force H War Diary] – 'admirals.org.uk'
* [http://www.hmshood.org.uk/reference/official/adm234/adm234-317.htm British Admiralty document on Mers-el-Kébir Action]
* [http://www.hmshood.com/history/forceh/oran.htm Destruction of the French Fleet at Mers El-Kebir] – ''H.M.S. Hood''

{{Task forces of the Royal Navy|state=collapsed}}

[[Category:Gibraltar in World War II]]
[[Category:Military units and formations of the Royal Navy in World War II]]
[[Category:Military units and formations established in 1940]]
[[Category:Royal Navy task forces]]
[[Category:1940 establishments in the United Kingdom]]
[[Category:1943 disestablishments in the United Kingdom]]
[[Category:Military units and formations disestablished in 1943]]