The Western Desert Force later became HQ XIII Corps, one of the major parts of the British Eighth Army which, from August 1942 was commanded by Lieutenant-General Sir Bernard Montgomery. The 7th Armoured Division took part in most of the major battles of the North African Campaign, including both battles of El Alamein (the First Battle of El Alamein in July 1942, which stopped the Axis advance, and the Second Battle of El Alamein in October/November 1942, which turned the tide of the war in North Africa).