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.
Air Naval Gunfire Liaison Company
ANGLICO is never assigned its own physical battlespace as teams are constantly on the move. An ANGLICO inherits its AO from whichever unit it supports. A Firepower Control Team in Iraq, for example, consists of no more than four to five men. The fifth man is needed to man the gun turret during a vehicle mounted mission. The primary member is a Forward Air Controller (FAC) or a Joint Terminal Attack Controller (JTAC). A radio operator and artillery observer will compose two of the three remaining team members, with the last member often being a squad automatic weapon (SAW) gunner. Even though each team member has their own specialty, ANGLICO Marines are all cross-trained within their team. This high level of training and proficiency is what makes ANGLICO units so effective.