He briefly commanded the squadron in March 1917 , before being promoted to captain in May 1917 .
Royce was posted to the 1st Aero Squadron , which was then serving on the Mexican border in support of the Pancho Villa Expedition .
Royce briefly commanded the squadron in March 1917 , before being promoted to captain in May 1917 .
Royce was posted to the 1st Aero Squadron , which was then serving on the Mexican border in support of the Pancho Villa Expedition .