Field Marshal Sir Gerald Walter Robert Templer was a senior British Army officer. He fought in both the world wars and was involved in the British response to the 1936–1939 Arab revolt in Palestine. As Chief of the Imperial General Staff, the professional head of the British Army between 1955 and 1958, Templer was Prime Minister Anthony Eden's chief military adviser during the Suez Crisis. He is also credited as a founder of the United Kingdom's National Army Museum.