WWI: The First Modern War

An assassin's bullet sparks a global conflict that quickly evolves into the deadliest war humanity has ever seen. In the chaos, a new generation of soldiers - and world leaders - emerges. Jeremy Renner narrates.

The fighting may have stopped, but tensions around the world continue to simmer just beneath the surface - and the seeds of the next great global conflict have already been sown. Jeremy Renner narrates.

War inevitably breaks out again. The men who came of age in battle now must rely upon past experiences to fight a new conflict as they face the greatest challenge humanity has ever seen. Jeremy Renner narrates.

By December 1914, all thoughts of a quick World War I victory had faded. But on Christmas Eve, an astonishing event took place: Up and down the Western Front, Allied and German soldiers met peacefully in No Man's Land.

See how technological achievements that streamlined 19th-century production, improved transportation, and expanded science were used to efficiently decimate a generation of soldiers in the early 20th century.

The wrecks of a German submarine and an English steamship were discovered over 30 miles from where they were thought to have sunk in World War I. Host John Chatterton dives deep to piece together what really happened.

Take a look back at the sinking of half of one of the largest Anglo-American convoys to sail to Russia in World War II.

See how the Lusitania sailed into history, leading the U.S. into World War I, and how the blistering conditions imposed by the Allies on post-war Germany resulted in the rise of Nazism.

The U.S. teens who marched into Europe's Great War could not have anticipated the horrors of modern warfare. Host Gerald McRaney explains how outdated tactics would turn an infantry charge into an act of mass suicide.