In June 1932, Krueger became commander of the 6th Infantry Regiment at Jefferson Barracks, Missouri, where he was promoted to colonel again on 1 August 1932.[20] Now aged 51, he became resigned to retiring as a colonel,[21] but in 1934 he returned to the War Plans Division, becoming chief of the division in May 1936,[22] and was promoted to temporary brigadier general in October 1936. In September 1938, Krueger went to Fort George G. Meade, Maryland, as commander of the 16th Infantry Brigade.[22] He was promoted to temporary major general in February 1939, when he became commander of the 2nd Infantry Division at Fort Sam Houston, Texas.[23] The 2nd Infantry Division was at the time being used as a test of the US Army's new triangular division concept. As a result, Krueger made a series of suggestions as to how the organization could be improved.