#499410. 1-5th-m-25th-inf-1966.com A History of the 1st Battalion 5th Infantry Regiment 25th Inf. Div. Vietnam in Photos. In the beginning of the Vietnam War when Cu Chi was the Bush. We were a Reactionary Unit War Zone C and D 1-5th-m-25th-inf-1966.com~Site InfoWhoisTrace RouteRBL Check