On August 17, 1942, shortly after his enlistment, he and McIntyre were sent to Miami Beach, Florida, where they entered USAAF OCS Class 42-E. Both completed training on October 28, 1942 and were commissioned as second lieutenants. His class of about 2,600 students (of which he ranked about 700th) selected Gable as its graduation speaker. General Arnold presented the cadets with their commissions. Arnold then informed Gable of his special assignment: to make a recruiting film in combat with the Eighth Air Force to recruit aerial gunners. Gable and McIntyre were immediately sent to Flexible Gunnery School at Tyndall Field, Florida, followed by a photography course at Fort George Wright, Washington State and promoted to first lieutenants upon its completion.