was appointed a Companion of the Order of the Bath for his services in the field on 1 January 1918. He was effectively Deputy Commander of the Fourth Army (deputising for General Sir Henry Rawlinson) in the final months of the war and played an important role in the success of the Battle of Amiens. He was appointed a Knight Commander of the Order of St Michael and St George for his services in connection with military operations in France and Flanders on 1 January 1919 and was also awarded the American Distinguished Service Medal by the President of the United States on 12 July 1919. The medal's citation reads: Montgomery was appointed Chief of Staff of the British Army of the Rhine following the war and then Deputy Chief of the General Staff in India on 27 March 1920 before becoming General Officer Commanding 53rd (Welsh) Division on 3 March 1922. He became General Officer Commanding 1st Division at Aldershot on 4 June 1923 and, having been advanced to Knight Commander of the Order of the Bath in the New Year Honours 1925, he was promoted to lieutenant-general on 16 March 1926. Following a two-year break on half-pay, he became General Officer Commanding Southern Command on 17 June 1928. Promoted to general on 1 October 1930, he was appointed Adjutant-General to the Forces on 1 March 1931 and made Aide-de-Camp General to the King on 3 March 1931. He was appointed Chief of the Imperial General Staff in February 1933. Among his main achievements at this time was the mechanising of the cavalry: indeed he was the driving force behind the formation of a permanent "Mobile Division". Despite this, according to Williamson and Millett, he was a great obstacle to innovation of mechanized forces and suppressed the analysis of the British Army's performance in the First World War initiated by his predecessor, Lord Milne. Advanced to Knight Grand Cross of the Order of the Bath in the King's Birthday Honours 1934, he was made a field marshal on 7 June 1935. Following the death of King George V he took part in the funeral procession in January 1936 and then retired in March 1936. He was also Colonel Commandant of the Royal Regiment of Artillery from 19 November 1927, Colonel Commandant of the Royal Tank Corps from 7 December 1934, Colonel Commandant of the 20th Burma Rifles from 5