In June 1918, as the German spring offensive pushes toward Paris, American Marines dig in at a hunting wood near the Marne River called Belleau Wood. This film reconstructs the three-week battle that followed, one of the costliest the US Marine Corps had fought to that point, using archival photographs, maps, and battlefield terrain to trace how green American troops held the line against seasoned German units. Historians walk the ground where companies charged through wheat fields into machine-gun fire and where the fighting collapsed into hand-to-hand combat among the trees, explaining why the wood changed hands repeatedly before the Marines finally cleared it. The film sets the battle inside the wider crisis of 1918, when German forces seemed close to breaking through to Paris and Allied commanders were desperate for any unit that could hold. It also covers the cost, the casualty figures that made Belleau Wood a defining, and mythologized, moment in Marine Corps history. Expect narration paired with expert commentary rather than dramatization, in the style of Timeline's other World War One battle films.