Who was the 1st Navy man who went into outer space?

Question

Who was the 1st Navy man who went into outer space?

Answer 1

This is in response to O'Really's response.

It is true that the Marines do come under the Department of the Navy. However, John Glenn was not in the Navy. He was trained as a Marine and wore a Marine uniform. No Marine is going to tell you that he is in the Navy.  

Answer 2

John Glenn...USMC is Dept, of the Navy

Answer 3

Alan Shepard.  Shepard flew America's first space flight in May 1961.

John Glenn was the first American in orbit, not the first in space.

Answer 4

Alan Shepard was the first Navy man in space, John Glenn was the first Marine in space.