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.
Iron Tank
The tank is controlled by a standard NES controller: Directional buttons control the tank's movement, "A" fires the tank's machine-gun, "B" fires the main gun, "Start" pauses the game on the main screen, and "Select" opens the in-game menu. The turret can point in the standard 8 directions and is rotated by simultaneously pressing "A" and the desired direction. The turret will maintain its direction on the screen regardless of the tank's movements or facing and using this is part of the game's strategy.