 Complete the following phrase:  On 1 April 1919, with the war over, Symes stayed in the army and reverted to his permanent rank of lieutet. He was promoted to captain again on 16 November 1923, with his date of rank backdated to 1 January 1923. Serving mainly on his regimental duties through the first half of the interwar period, Symes was selected to attend the Staff College, Camberley, on 20 January 1931, and was promoted to brevet major on 1 January 1932. His fellow students there included men such as John Nichols, William Gott, Miles Dempsey, George Hopkinson and Maurice Chilton. On completing the course he was posted to the Royal School of Artillery as a General Staff Officer GSO on 15 January 1933. He then became a brigade major with the 14th Infantry Brigade, then commanded by Brigadier Henry Maitland-Makgill-Crichton, on 1 November 1934, The brigade, part of the 5th Infantry Division, was then stationed in North Yorkshire before being posted to Palestine on internal security duties during the 