of Castle Harbour, infilling waterways and part of the harbour to make a land-mass contiguous with St. David's Island and Cooper's Island. This added to Bermuda's land mass, bringing the total area of the base to . The area had already been in use for centuries by the British Army, with islands across the southern mouth of Castle Harbour, including Cooper's Island, housing obsolete fortified coastal batteries (the US Army placed a modern coastal artillery battery on Cooper's Island, though this was removed at the end of the Second World War), a rifle range on Cooper's Island, and a tent camp on St. David's Island for the infantry guarding nearby St David's Battery was relocated nearer the battery as the underlying land became part of Fort Bell. The airfield was completed in 1943, and known as Kindley Field after World War I aviator Field E. Kindley. Most of the base was taken up by the US Army Air Forces. The western end of the airfield, near the causeway, was taken up by the RAF. RAF Transport Command, formerly based at Darrell's Island, re-located to the landplane base, leaving only RAF Ferry Command operating on Darrell's. Postwar use The US Army was left as the only military establishment on the base after both RAF establishments (at Kindley Field and Darrell's Island) were withdrawn at the end of the war (followed by the closure of most of the Royal Naval Dockyard and withdrawal of the last regular British Army unit in the 1950s), although the RAF (and the Royal Navy Fleet Air Arm) has continued to use its end of the field, converted to a Civil Aviation Terminal by the Civil Aviation department of the Bermuda Government (headed by wartime RAF commander Wing Commander Mo Ware), as a staging post for trans-Atlantic flights. The United States Army garrisoned Bermuda with ground forces for the remainder of the war, including Fort Bell. Following the end of hostilities, its ground forces were withdrawn, other than those required for the defence of Fort Bell, on 1 January 1946, when US Army Air Transport Command took control of the entire base. The airfield ceased to be distinguished within the base as the name Fort Bell was discontinued and Kindley Field came to be applied to the entire facility. In 1947, it was decided to separate the U.S. Army Air Forces from the U.S. Army to create