In August 1907, MacArthur was sent to the engineer district office in Milwaukee, where his parents were living. In April 1908, he was posted to Fort Leavenworth, where he was given his first command, Company K, 3rd Engineer Battalion. He became battalion adjutant in 1909 and then engineer officer at Fort Leavenworth in 1910. MacArthur was promoted to captain in February 1911 and was appointed as head of the Military Engineering Department and the Field Engineer School. He participated in exercises at San Antonio, Texas, with the Maneuver Division in 1911 and served in Panama on detached duty in January and February 1912. The sudden death of their father on 5 September 1912 brought Douglas and his brother Arthur back to Milwaukee to care for their mother, whose health had deteriorated. MacArthur requested a transfer to Washington, D.C., so his mother could be near Johns Hopkins Hospital. Army Chief of Staff, Major General Leonard Wood, took up the matter with Secretary of War Henry L. Stimson, who arranged for MacArthur to be posted to the Office of the Chief of Staff in 1912.