The Disturbing Vietnam War Iceberg Explained

Military history professor Bill Allison rates more Vietnam War movies, such as "Hamburger Hill," for realism. Allison breaks down additional battlefield tactics used during the Vietnam War, such as the war of attrition portrayed in "Hamburger Hill" (1987); Allison is a professor of military history at Georgia Southern University. He has written several books about the Vietnam War, including "My Lai: An American Atrocity in the Vietnam War." He is also a Vietnam battlefield tour guide with the UK