Photo Gallery: From One Catastrophe to the Next 02/07/2014
 Many historians refer to the two wars together as the "Second Thirty Years'...
DPA

Many historians refer to the two wars together as the "Second Thirty Years' War." The connections between the two conflicts are clear. Many in Germany wanted to avenge the Versailles Treaty by defeating France. But there was also unsettled business elsewhere. Here, a plaque celebrating Gavrilo Princip as a hero is given to Adolf Hitler after the Wehrmacht marched into Sarajevo in 1941.