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.
Second Battle of Gaza
The tanks which arrived in Palestine in January 1917 had been used for instruction and were not of the latest type, however during a trial attack they proved themselves in the sandy conditions. "[T]he sand though fairly heavy, did not interfere with them in the least. They buzzed along most satisfactorily." They worked well in sand so long as the treads were not greased, which was the normal practice. The tank, "War Baby" was powered by a 105-horsepower engine. It had a revolver, loop holes, periscopes, dynamos and differentiator, and was armed with four Hotchkiss machine guns and two auxiliary guns. This tank was manned by one officer sitting beside the driver, four gunners on bike seats and two greasers.