Tank
With World War II the multi-turreted tanks proved impracticable, and as the single turret on a low hull design became standard, crews became standardized around a crew of four or five. In those tanks with a fifth crew member, usually three were located in the turret (as described above) while the fifth was most often seated in the hull next to the driver, and operated the hull machine gun in addition to acting as a co-driver or radio operator. Well-designed crew stations, giving proper considerations to comfort and ergonomics, are an important factor in the combat effectiveness of a tank, as it limits fatigue and speeds up individual actions.
NM142
The vehicle has a crew of four. The commander leads the crew, including designating targets, operating communication systems and navigating. The gunner is responsible for operating and maintaining the TOW2 weapon system. The loader assists the gunner, especially by reloading the launch tubes whenever necessary. Finally, the driver maneuvers the APC and is responsible for maintaining the engine, treads and other driving mechanisms.