Born, raised, and educated in Virginia, General Grant received his M.D. from the University of Virginia in 1915. He entered the Army Medical Service in 1916 as a First Lieutenant. During World War I he served in Panama and various stations in the United States. From 1919 to 1922 he served with the Army of Occupation in Germany. After other medical tours of duty, he attended the School of Aviation Medicine Headquarters in 1931. He was stationed at Randolph Field, Texas for the following five years. He later attended the Air Force Tactical School and the Chemical Warfare School. In 1939 he became Chief of the Medical Division, Office of the Chief of the Air Corps.