In World War II, aerial warfare became a 24-hour-a-day thing. The bombers came first, carrying out devastating raids, like the December, 1940 bombing of Coventry or the Blitz over London. The British, of course, returned the favor by sending RAF Bomber Command over Germany at night.
Neither side liked having their cities bombed in the middle of the night, but stopping them proved incredibly difficult. The United States watched from afar and got technical briefings on radar during the Battle of Britain. The United States Army Air Corps turned to Northrop to help develop a specialized nightfighter, while also turning the existing A-20 into an interim nightfighter.
What emerged was the P-61 Black Widow, named after the deadly spider that inspired its black coat of paint. The first thing that jumps out at you is the size. According to aviation historian Joe Baugher, this fighter was about as big as some bombers! Like the P-38, it was a twin-engine plane. Its armament was very heavy: four Hispano 20mm cannon in the belly and four M2 .50-caliber machine guns in a turret on the top. It could also carry over three tons of bombs.
Despite the plane's size and weight, it proved to be very maneuverable. By the time it reached the front in June, 1944, much of the Japanese and German opposition had been destroyed. Still, the Smithsonian Institute notes that the P-61 scored 127 air-to-air kills of enemy aircraft (plus 18 V-1s).
Despite being designed to kill enemy planes, the P-61 also proved to be very good at "night intruder" missions. In short, this plane proved very capable when it came to shooting up enemy airfields, trains, supply convoys, tanks, and other ground installations. But World War II had seen the rise of the jet age, and a month before the Korean War, the last P-61s were retired.
Learn more about this plane with a lethal bite in the video below.