Armored Vehicles, APC M113

History: 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.

The M113 introduced new aluminum armor that made the vehicle much lighter than earlier vehicles; it was thick enough to protect the crew and passengers against small arms fire but light enough that the vehicle was air transportable and moderately amphibious. In the U.S. Army, the M113 series have long been replaced as front-line combat vehicles by the M2 and M3 Bradleys, but large numbers are still used in support roles such as armored ambulance, mortar carrier, engineer vehicle, and command vehicle. The U.S. Army's heavy brigade combat teams are equipped with approximately 6,000 M113s and 4,000 Bradleys.

The M113's versatility spawned a wide variety of adaptations that live on worldwide, and in U.S. service. These variants together currently represent about half of U.S. Army armored vehicles. To date, it is estimated that over 80,000 M113s of all types have been produced and used by over 50 countries worldwide, making it one of the most widely used armored fighting vehicles of all time. The Military Channel's Top Ten series named the M113 the most significant infantry vehicle in history.

The U.S. Army planned to retire the M113 family of vehicles by 2018, seeking replacement with the GCV Infantry Fighting Vehicle program, but now replacement of the M113 has fallen to the Armored Multi-Purpose Vehicle (AMPV) program. Thousands of M113s continue to see combat service in the Israel Defense Forces, although as of 2014 the IDF was seeking to gradually replace many of its 6,000 M113s, with Namer APCs.

Railroad/Company: FMC Corporation is an American chemical manufacturing company headquartered in Philadelphia, Pennsylvania. The company was originally founded by chemist John Bean in 1883 as the Bean Spray Pump Company in Los Gatos, California, producing piston pumps for insecticides. In 1928, Bean Spray Pump purchased two companies: the Anderson-Barngrover Co. and Sprague-Sells Co. At this time the company changed its name to Food Machinery Corporation, and began using the initials FMC.

In 1941 the company FMC received a contract to design and build amphibious landing vehicles tracked vehicles for the United States War Department, and afterwards the company continued to diversify its products, including an extensive line of rail cars. The rail car production really kicked into high gear during the 1970s when FMC produced many models to take advantage of the Per Diem rules. Between 1965 and 1985 FMC was the owner of the Gunderson metal works in Springfield, Oregon, during that period it was known as the "Marine and Rail Equipment Division of FMC" (MRED), it was sold in 1985 to The Greenbrier Companies.
FMC employs 7,000 people worldwide, and had gross revenues of US$2.8 billion in 2017

From Wikipedia