"9th Aero Squadron" . . . . . . . . "125px" . . "1919" . . . . . . . . . . "9th" . . . . . . "9th Aero Squadron" . . . . . . . . . . . "9th Airborne Squadron" . . . . "9th Bombardment Wing" . . . . . "1917" . "Night Observation" .