Lineage. Organized as 2 Aviation School Squadron on 9 May 1917. Redesignated as 15 Aero Squadron on 22 Aug 1917. Demobilized on 18 Sep 1919. Reconstituted, and consolidated (1924) with 15 Squadron (Observation) which was authorized on 30 Aug 1921, organized on 21 Sep 1921, and redesignated as 15