M113 armored personnel carrier

The M113 is a fully tracked armored personnel carrier (APC) that was developed and produced by the Food Machinery Corp (FMC). The M113 was sent to USAREUR to replace the mechanized infantry's M59 APCs in the 1961/62 time frame. The M113 was first tried out in combat in April 1962 after the United States provided the South Vietnamese Army (ARVN) with heavy weaponry such as the M113, under the Military Assistance Command, Vietnam (MACV) program. Eventually, the M113 was the most widely used armored vehicle of the U.S. Army in the Vietnam War, earning the nickname 'Green Dragon' by the Viet Cong as it was used to break through heavy thickets in the midst of the jungle to attack and overrun enemy positions. It was largely known as an "APC" or an "ACAV" (armored cavalry assault vehicle) by the allied forces.