The Grumman F6F Hellcat and the Highest Kill-to-Loss Ratio of World War II Among the many fighter aircraft that dominated the skies during World War II, the Grumman F6F Hellcat stands out as the most statistically successful in terms of kill-to-loss ratio among major combatants. According to official records and commonly cited air combat statistics, the Hellcat achieved an extraordinary balance of effectiveness, survivability, and timing, making it one of the most decisive naval fighters in avia