In a nutshell for VI IFV’s the doors to get out are on the back. Anyways how this tactic works is troops jump out the back of a moving IFV while in a combat zone for a faster troop deployment onto a battleground while the IFV’s or APC’s provide them cover. Also to stop them from being crushed they get out the back ONLY when no vehicles or vehicles are around 50 feet away from the IFV. If don’t correctly they would land a couple feet behind the IFV and get up within a few seconds This is taught in Boot Camp and was used in Lawerence war battles in open fields. Also used in Hienens Field