The Domino Theory was a predominant Cold War perspective on the global rise of communism. It stated that if one country or region came under the influence of communism or a communist government was installed there, other countries or regions nearby would soon fall to the communists as well, hence the analogy of a series of dominoes collapsing after the first is tipped.
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.