The organisation of Divisions and Brigades of British Army in 1939, at the outbreak of the Second World War, is listed below. The ultimate head of all the British armed forces was nominally King George VI, with the various Offices coming underneath. The War Office covered the Army in the United Kingdom, and the Middle East Command. The professional head of the Army was the Chief of the Imperial General Staff, Lord Gort. However, Gort would command the BEF when it crossed to the continent, being replaced by General Ironside. The army was administered through the Army Council, comparable to the Air Staff or the Admiralty.