Tank
Most modern tanks most often have four crew members, or three if an auto-loader is installed. These are the:
Historically, crews have varied from just two members to a dozen. For example, pre-World War II French tanks were noted for having a two-man crew, in which the overworked commander had to load and fire the gun in addition to commanding the tank. First World War tanks were developed with immature technologies; in addition to the crew needed to man the multiple guns and machine guns, up to four crewmen were needed to drive the tank: the driver, acting as the vehicle commander and manning the brakes, drove via orders to his gears-men; a co-driver operated the gearbox and throttle; and two gears-men, one on each track, steered by setting one side or the other to idle, allowing the track on the other side to slew the tank to one side.
BMPT Terminator
The rear of the driver's compartment, at the front of the vehicle, has been raised, providing greater internal volume. It uses proven elements from those fitted to the T-90 MBT. The Terminator has a crew of five which consists of: a vehicle commander, a driver, a gunner, and two grenade launcher operators. NBC protection is provided to the crew to ensure survival against radiation, chemical and biological weapons. As an option, the BMPT can be fitted with mine-clearing devices such as the KMT-7 or KMT-8 mine sweepers. T-72 tanks can be also converted into BMPT.