Complex sentence: The four Fairchild C-119 Flying Boxcars and support personnel were placed on a 90-day rotation schedule, and the commander, 315th Air Division determined where the aircraft would be deployed.
Split into simpler sentences: The four Fairchild C-119 Flying Boxcar and support personnel were placed on a 90-day rotation schedule. The commander, 315th Air Division determined where the aircraft would be deployed.