8 December 1913

Effective Dec. 8, 1913, the 1st Provisional Aero Squadron was redesignated as the 1st Aero Squadron. This first military unit of the U.S. Army devoted exclusively to aviation, today designated the 1st Reconnaissance Squadron, has remained continuously active since its creation. Assigned a role in the Punitive Expedition of the Mexican border in 1916, this squadron became the first air combat unit of the U.S. Army.