After the war Montgomery became the C-in-C of the British Forces of Occupation and the British member of the Allied Control Council. He was made 1st Viscount Montgomery of Alamein in 1946. He was Chief of the Imperial General Staff from 1946 until 1948, succeeding Alanbrooke, but was largely a failure as it required strategic and political skills he did not have. He rarely spoke with his fellow commanders-in-chiefs, and sent his deputy to their meetings. He clashed particularly with Arthur Tedder, who as Deputy Supreme Commander had wanted Montgomery sacked during the Battle of Normandy, and who was by now Chief of the Air Staff. When Montgomery's term of office expired, Prime Minister Clement Attlee appointed General (later Field-Marshal) William Slim as his successor; when Montgomery protested that he had already promised the job to his protegé General Crocker, a former corps commander from the 1944-5 campaign, Attlee is said to have given the memorable retort "Untell him".