The document discusses four sources related to the Vietnam War: 1) A written document from an anonymous soldier about his first combat experience. 2) A painting by Bruce Fletcher depicting events in Long Tan Phuoc Province on August 18, 1966. 3) A 1970 lithograph poster showing that four out of five men chose their careers. 4) A poem written in 2007 by Paul Buttigieg from his personal experience as a survivor of the Stolen Generation.