how many have served in three or more different military services or more?
The best record would be with:
There might be a few pilots who served in Marines, Navy, Air Force or Marines, Army, Air Force. Maybe a few that served in Marines, Navy, Coast Guard.
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them