T. A. Gardner
Thread Killer
More than once, and only because somebody with a nuke in the field didn't use it.I was 13 then we knew about it in NYC, ground zero , and the Russians backed down
During the Berlin crisis, JFK ordered over 300 of these into the field.

Three guys in a jeep with a nuclear hand grenade. What could possibly go wrong...?

Or during the Cuban missile crisis...

Cuban Missile Crisis: When Soviet Subs Nearly Used Nuclear Arms
“It would be well for your government to consider that having your ships and ours, your aircraft and ours, in such proximity is inherently DANGEROUS....

If the submarine squadron commodore wasn't onboard, we'd have had WW 3 because the sub's captain and political officer wanted to nuke the US carrier Randolph and escorts. That whole crisis was precipitated because Kennedy insisted on deploying Thor and Jupiter IRBM's to Europe against his military advisor's advice.