The 353rd Fighter Group, nicknamed the Slybird Group, was a fighter group of the United States Army Air Forces during World War II. The group was stationed in England and comprised the 350th, 351st, and 352nd Fighter Squadrons. It pioneered the P-47 dive-bombing and ground attack technique adopted by both Eighth and Ninth Air Forces. The group flew 447 combat missions and claimed 330 air and 414 ground aircraft destroyed. Group markings were black, yellow, black, yellow spinners, with a 48-inch black and yellow checker band around the cowling to the end of the exhaust stubs.