Following Villa's raid on Columbus, New Mexico, on 9 March 1916, the 1st Aero Squadron was attached to Major General John J. Pershing's Punitive Expedition. It consisted of 11 pilots, 84 enlisted men (including two medics), a civilian mechanic, and was supported by an engineer officer and 14 men. Eight Curtiss JN-3s were disassembled at Fort Sam Houston on 12 March and shipped the next day by rail to Columbus, along with half of the squadron's motorized transportation: ten Jeffrey trucks, one automobile, and six motorcycles. Two other trucks were received in Columbus and all of the trucks assigned to the expedition's quartermaster. The JN-3s were reassembled as they were off-loaded on 15 March, the date the first column marched into Mexico. The first observation mission flown by the squadron, and the first American military reconnaissance flight over foreign territory, was flown the next day and lasted 51 minutes with Dodd at the controls and Foulois observing.