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.
Franz Bäke
The historian Sönke Neitzel questions the number of "tank kills" attributed to various tank commanders. According to Neitzel, numbers of successes by highly decorated soldiers should be read with caution as it is rarely possible to determine reliably in the heat of the battle how many tanks were destroyed and by whom. Military historian Steven Zaloga uses the term "tank ace" in quotation marks in his 2015 work "Armored Champion: The Top Tanks of World War II". Zaloga points out that most of the supposed panzer aces operated the Tiger I heavy tank on the Eastern Front; having advantages both in firepower and in armor, Tiger I was "nearly invulnerable in a frontal engagement" against any of the Soviet tanks of that time. A crew operating a Tiger could thus engage its opponents from a safe distance.