A chronological look at the events that occurred during the world wars. 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 soldier emerges, including a group of men who would become the most infamous leaders of the 20th century.

A new generation of world leaders is called to action as 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.