12th Observation Group
The squadron was transferred to the Aviation General Supply Depot, Camp Morrison, Virginia, in Oct 1917; redesignated the 474th Aero Squadron, Feb 1918; and dispatched to France with the American Expeditionary Force Jan 1918 – Jun 1919.Its duties consisted of constructing temporary airfields for the First Army Air Service.The 12th Obs Group commanded O-1, O-2 and O-19 observation squadrons in the Western United States.Prior to its activation, these squadrons has been assigned to various Army ground units.[1] This article incorporates public domain material from the Air Force Historical Research Agency