| History Channel special: This epic struggle had a more profound effect on civilization than any other war in history. New countries had to be built on the ruins of a continent. It was the end of kings, empires and innocence, and the beginning of weapons like the U-boat, the machine gun, the tank and poison gas. Graphic footage captures the horrors of trench warfare in battles like Verdun, where over one million men died. Riveting commentary from leading experts details the awesome effects of new technology on the battlefield, and the revolutionary changes that the end of the war brought including the near-inevitable rebirth of Germany as a military force to be reckoned with in World War II.