Nuclear War during the Cuban Missile Crisis was averted by the action of a single Soviet officer.
A secret organization founded by the NATO existed, which would stay behind and fight a guerrilla war in the event of a soviet invasion and plotted terrorist attacks (Operation Gladio).
There were a series of unidentified, underwater objects named “Quackers” during the Cold War.
During the Cold War, the US military developed a rifle that fired nuclear war heads. It was called the Davy Crocket and production of this smallest nuclear weapon began in 1956, with a total of 2,100 being made. The weapon was deployed with U.S. Army forces from 1961 to 1971.