Rangers at War: LRRPs in Viet-Nam by Shelby L. Stanton . The 9th Infantry Division LRRP (Long Range Reconnaissance Patrols) Platoon became the LRP Detachment which became E Company, 50th Infantry which became E Company, 75 Infantry (Rangers) which… Got all that? Don’t worry, Shelby Stanton sorts it all out for you. He not only presents the history of Rangers and LRRPs unit by unit, but also paints a vivid picture of the toughest of all jobs in Vietnam. Read and reviewed by Jimmie A. Kepler.