Vought F4U Corsair
The Corsair was used by the U.S. Navy, U.S. Marines, Fleet Air Arm and the Royal New Zealand Air Force, as well as the French Navy Aéronavale and other, smaller, air forces.  Some Japanese pilots said it was the best American fighter of World War II, and the U.S. Navy reported an 11:1 kill ratio.  Besides serving as a fighter, it became the most capable carrier-based fighter-bomber of World War II.