19 (song) shoved into jungles and shot at." The title "19" comes from the documentary's claim that the average age of an American combat soldier in the war was 19, as compared to World War II's 26. This claim has since been disputed. Undisputed statistics do not exist, although Southeast Asia Combat Area Casualties Current File (CACCF), the source for the Vietnam Veterans Memorial, shows a large number of deaths (38%) were ages 19 or 20. According to the same source, 23 is the average age at time of death (or time of declaration of death). The song also comments that while
Puerto Ricans in the Vietnam War regular Army to the Puerto Rico National Guard. Since then Puerto Ricans have served in regular integrated units of the military. The Vietnam War was fought between communist North Vietnam, supported by its communist allies, and the government of South Vietnam, supported by the United States and other nations. The United States entered the war to prevent a communist takeover of South Vietnam as part of their wider strategy of containment. Military advisors arrived beginning in 1950. U.S. involvement escalated in the early 1960s and combat units were deployed beginning in 1965. Involvement peaked in 1968 at the time of