Frederic (Gary Cooper), an American ambulance driver working for the Italian Army during World War I, falls in love with British Red Cross nurse Catherine (Helen Hayes). His jealous commanding officer, Major Rinaldi, transfers Catherine to a different hospital. But an injury on the battlefield takes Frederic to Catherine's new hospital in Milan.
This amazing 1925 film is a dramatic reconstruction, performed by members of the British armed forces, of the "Battle of Ypres" in the First World War.