If your department or organization requires a traditional military look or if you just fell in love with this jacket while you were in the service. This old favorite was standard Issue cold weather gear to U.S. Troops starting in 1965 and was widely used during the Vietnam War and in several other combat operations around the globe. Our jackets are built to the mil-c-43455j standard and include a matching button-in liner that can be worn separately as a stand alone jacket.