The powerful true story behind the classic Aussie song I Was Only Nineteen.

The story of Frank 'Frankie' Hunt and the other soldiers of 3 Platoon, A Company, 6 Battalion, Royal Australian Regiment who became the inspiration for Redgum's 1983 hit song I Was Only Nineteen - the anthem for the veterans of the Vietnam War. Gary Adshead spoke to the author of a new book The Jungle Dark which tells the story.