During the Franco-Prussian War of 1870-71, Prussian forces and those of the allied provinces of the North German Confederation seized the French provinces of Alsace and Lorraine. The resounding Prussian victory during the brief conflict and particularly the occupation of Alsace and Lorraine were contributing factors in the outbreak of World War I.
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.