NATO

The North Atlantic Treaty Organization, also known as the North Atlantic Alliance and often abbreviated to NATO, was a pre-War intergovernmental military alliance based on the North Atlantic Treaty.

Background
NATO issued a standard 7.62mm and 9mm round, which was used in weapons of member countries. Some nuclear launch code carriers from the American Intelligence Corps have been awarded the NATO medal.

Appearances
NATO is mentioned in Fallout 76 and Fallout Tactics.

Behind the scenes
NATO is based off of the real world equivalent of the same name.