Gravely, William S. was born on March 30, 1888 in Martinsville, Virginia, United States. Son of William Seymour and Elizabeth Leigh (Hairston) Gravely.
Graduate Virginia Polytechnic Institute, Blacksburg, Virginia, 1911. Graduate Air Service Pilots school and Bombardment School, 1921, Air Corps Tactical School, 1931, Command and General staff schedul, 1936.
Commissioned First lieutenant, Field Artillery, 1917, on active duty to 1920. Commissioned First lieutenant, Air Service, 1920, advancing through the grades to brigadier general, 1944. Home: Roanoke, Virginia.