The 5th version of the Tropical Combat Coat did away with the sleeve gussets that had been a feature of all prior models. Like the 4th pattern jungle jacket it had only one pen pocket, was made from rip-stop cotton poplin and was produced in both OG-107 and ERDL camouflage.
The 1st Infantry Division is a combined arms division of the United States Army, and is the oldest continuously serving in the Regular Army. It has seen continuous service since its organization in 1917 during World War I.It was officially nicknamed "The Big Red One" (abbreviated "BRO") after its shoulder patch and is also nicknamed "The Fighting First." The division has also received troop monikers of "The Big Dead One" and "The Bloody First" as puns on the respective officially sanctioned nicknames. It is currently based at Fort Riley, Kansas.
The division fought in the Vietnam War from 1965 to 1970. Arriving in July 1965, the division began combat operations within two weeks. By the end of 1965 the division had participated in three major operations: Hump, Bushmaster 1 and Bushmaster II, under the command of MG Jonathan O. Seaman.