G.I. Joe is the code name for America's daring highly trained special mission force. Its purpose: To defend human freedom against Cobra, a ruthless terrorist organization determined to rule the world.
Primax 984.17 Alpha (US G1 Cartoon)
It is unknown when the war with Cobra began, but G.I. Joe was formed to oppose it.
- G.I. Joe: A Real American Hero episode 1: The Cobra Strikes