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.
Steam tank
The flame thrower, located in the front cabin, had a range of ; additionally there were four .30 cal. machine guns; two in a sponson at each side. The length of the vehicle was 34 feet 9 inches, the width 12 feet 6 inches and the height 10 feet 4.5 inches. The tracks were 24 inches wide. Each track frame carried mud clearing spikes, sometimes mistaken for battering rams. The tank had a weight of about fifty short tons. There was to have been a crew of eight, on the assumption there were a commander, a driver, an operator of the flame thrower, a mechanic and four machine gunners.