From the Dong Ap Bia attack, 'The Battle of Hamburger Hill' to the 1973 ceasefire. "The Secret of the Men" deals with the period 1969-1975 and revolves around the weariness of the fighters which, among other factors, will lead to withdrawal and defeat. As peace negotiations dragged on, U.S. soldiers faced new threats and dangers - and a largely conscript army started to come apart under pressure. Once-censored film footage provides a shocking insight, from the carnage of Hamburger Hill to vicious fighting in the Mekong Delta.
