The July Crisis included a series of diplomatic maneuvers among the nations of Europe during the summer of 1914 following the assassination of Archduke Francis Ferdinand of Austria-Hungary in Sarajevo on June 28. The crisis led directly to the outbreak of World War I when Austria-Hungary delivered an ultimatum to Serbia, demanding concessions that would weaken the small Balkan nation.
During WWII, the unique civilian organization did much to boost the morale of soldiers at home and abroad.
Acclaimed General Lloyd Fredendall lost his command after the debacle at the Battle of the Kasserine Pass.
The surprise attack on Pearl Harbor on December 7, 1941, benefited from the firsthand observation of spies on Oahu.