![Standard Flying Training Stages for Pilots](https://brooksidepress.org/cartmell/wp-content/uploads/2018/10/AAF-VI-img568-300x237.jpg)
From Wikipedia:
Advanced Pilot Training placed the graduates in two categories: single-engined and multi-engined. Single-engined pilots flew fighters and fighter-bombers. Multi-engined pilots learned to fly transports and bombers. First they flew Trainer aircraft, then transitioned to front-line aircraft. Those students selected for single-engine training flew the AT-6 “Texan,” and those who went into twin-engine training flew the Curtiss AT-9 “Jeep,” the all-wood Beechcraft AT-10 “Wichita,” or the Cessna AT-17 “Bobcat.”[1]