About the M3 Half Track – WWII Armored Personnel Carrier: The M3 Half Track was the main troop transport vehicle for the US Army during World War II and the Korean War. This vehicle was designed to carry an entire rifle squad and their equipment, often towing a trailer with fuel, water, or ammunition. The M3 was fitted with an armored “pulpit” mount for an M2HB heavy machine gun and had three pintle mounts for additional machine guns. The M3 was the most advanced version of the M3 half track fam