Napalm became one of the preferred weapons of the Korean War. Pilots returning from the war zone often remarked they would rather have a couple of gasoline tanks full of napalm to drop than any other weapon, bombs, rockets or guns. The U.S. Air Force and Navy used napalm with great effect against all manner of targets to include troops, tanks, buildings and even rail road tunnels. The demoralizing effect napalm had on the enemy became apparent when scores of North Korean troops began to surrender to aircraft flying overhead. Pilots noted they saw surviving enemy troops waving white flags on subsequent passes after dropping napalm. The pilots radioed to ground troops and the North Koreans were captured.