Poor planning and a lack of cooperation meant British strategy was destined to fail during the American Revolution.
On May 8, 1945, Nazi Germany surrendered to the Allies, bringing an end to World War II in Europe and triggering huge celebrations around the world.
UFO sightings during NATO war games in 1952 set the stage for the season finale of "Project Blue Book," the History channel's series about the U.S.' real-life UFO-hunting program.
During a pivotal World War II battle, three U.S. aircraft and their seven crewmen were lost at sea. The planes were recently located in a lagoon in the Pacific Ocean.
Archaeologists have found a sophisticated Soviet spy radio that was buried in a former forest in Germany shortly before the fall of the Iron Curtain.
A physicist who coined the term "black hole" lost highly sensitive nuclear weapons information when the U.S. had just completed tests of the first hydrogen bomb.
Historians recently uncovered the name of a fourth spy who delivered U.S. atomic secrets to the Soviets in the 1940s.
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