As the Great War begins, Billy and Jack Kelly together with cousin Paddy sign on and are shipped out to serve with the diggers in Europe.
Billy, a known crack marksman is singled out to head up a highly successful sniper team. Journalist Keith Murdoch is attached to Billy's group for press coverage of the front line. With Murdoch's glowing reports, Billy and the boys become celebrated war heroes.
As the war drags on, the defeat at Gallipoli leads to more death and carnage in France. Billy's sniper abilities and courage in hand to hand fighting astounds his fellow soldiers, he is awarded the Legion of Honour.