Developed for the Korean War, the M1951 field coat was made from OG-107 water repellent and wind resistant sateen and had a zip front closure and button cuffs. It had both waist and hem drawstrings and in cold weather could be fitted with a detachable liner. A hood could be buttoned to the coats epaulets to provide protection against the elements for both head and face. Though they were rarely needed in Vietnam, field coats were worn in the Central Highlands where it became rather cold at night.

The 1st Cavalry Division ("First Team") is a and is one of the most decorated combat divisions of the . It is based at , Texas. It was formed in 1921 and served during , the , the , the , with the in Bosnia-Herzegovina, in the , in the and in . As of October 2017, the 1st Cavalry Division is subordinate to and is commanded by Major General Jeffery D. Broadwater.

The 5th Infantry Division (Mechanized)nicknamed the "Red Diamond", or the "Red Devils" was an infantry of the that served in World War I, World War II and the , and with and the . It was disbanded and deactivated on 24 November 1992.

Sergeant First Class (SFC) is the seventh (E-7) in the , ranking above (E-6) and below and (E-8), and is the first rank designated as a senior non-commissioned officer (SNCO).