Nope, not the Mustang. I have something a little different in mind...
What warbird?
1) In the main conflict where it was used, it was used by both sides.
2) Its wings could be folded back.
3) The many variants include anti-submarine and "COIN" versions.
4) At least one "victory" AGAINST this type involved the use of .45 caliber guns.
5) The man who founded the company that designed it was an "ace" in an earlier war.
6) There have been modern reproductions available as plans, kits and certified aircraft - in 75% size.
7) Reconnaissance was one of the tasks it was given.
More guesses?