Combined Operations Headquarters
Source: National Archives Series reference DEFE 2.
Arising from the armistice concluded by France with Germany in June 1940 and the evacuation of British forces from the Continent, a small organisation was established to take command of subsequent raiding operations against enemy territory and to provide advice on combined assaults. From this emerged a distinct Combined Operations Headquarters, staffed by all three services, but independent of all of them and under the command of a Director of Combined Operations. Admiral of the Fleet, Sir Roger Keyes, was appointed first director in July 1940; he was succeeded in October 1941 by Commodore Lord Louis Mountbatten with the title Adviser on Combined Operations. In March 1942 this title was altered to Chief of Combined Operations; it was also decided that the Chief of Combined Operations should attend meetings of the Chiefs of Staff as a full member whenever major issues were in question and, as previously, when his own combined operations or any special matters in which he was concerned were under consideration. In October 1943 Lt. Col. Robert Edward Laycock became Chief of Combined Operations.
From the establishment of a Combined Training Centre in August 1940 at Inveraray, Argyllshire, the Combined Operations Command expanded rapidly both within the United Kingdom and overseas, notably in the Middle East and India. In 1942 it sent a permanent representative to the Joint Staffs Mission in Washington and in the same year a Combined Operations Experimental Establishment was set up at Appledore, Devon. This establishment was much involved in the investigation of problems likely to be encountered on the beaches in connection with an invasion of Europe, particularly as regards the landing of armoured vehicles, stores, supplies, etc. Following the successful invasion of Normandy in 1944, a similar establishment was set up in India to carry out the developments and trials necessary in the very different conditions in the Far East.
From its formation, Combined Operations Headquarters maintained a close, though sometimes strained, contact on the naval side with the Admiralty, which set up a number of combined operations branches within its own departments, particularly in relation to operations, materials and personnel. Raiding forces, such as commandos, came under the command of Combined Operations Headquarters, except when they were employed as part of larger operations. Throughout the war Combined Operations Headquarters played a key role in the development of offensive operations against the enemy. This was notably the case in the raid on Dieppe in August 1942 and the preparation and planning of the North Africa and Sicily campaigns in 1942 to 1943, the invasion of Europe in 1944 and similarly, through its directorate in India, in operations in the Far East.
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