Journalist Peter Greste traces the career of Sir John Monash, the engineer turned general credited with reshaping how Australia and Britain fought the First World War. Monash rose from civilian life to command the Australian Corps, pioneering combined-arms tactics that folded tanks, aircraft, artillery, and infantry into a single coordinated assault, an approach historians in the film argue shortened the war on the Western Front. Greste walks the ground at battles like Hamel where these methods were first tested, using archival photographs, letters, and expert interviews to explain why Monash's Jewish, German-born background made his rapid promotion through the British-dominated command structure unusual for its time. The film runs alongside a personal thread: Greste tracking down what happened to his own four great-uncles who served under Monash, following their service records into the trenches to see how the general's tactical revolution played out for the ordinary soldiers beneath him. The two stories meet in the same mud, one command decision at a time.