We Were Soldiers
Moore is remembered as the lieutenant colonel in command of the 1st Battalion, 7th Cavalry Regiment, at the Battle of Ia Drang in 1965, during the Vietnam War. The battle was detailed in the 1992 bestseller "We Were Soldiers Once… and Young", co-authored by Moore and made into the film "We Were Soldiers" in 2002, which starred Mel Gibson as Moore; Moore was the "honorary colonel" of the regiment.