Was the term geronimo coined from an old Hispanic eplorer?
According to the story, the US soldiers watched a film about the Native American warrior Geronimo before one of the first mass parachute dives in 1940, and one of the parachutists chose to shout out the name to show he wasn’t scared. Geronimo himself was given the name by Mexican soldiers, but there’s little information on why. However, any connection to Spanish or Hispanic explorers is unlikely. Sources: http://www.straightdope.