365th Intelligence, Surveillance, and Reconnaissance Group

The 1st Search Attack Group was a United States Army Air Forces unit that served during World War II. Its last assignment was with First Air Force. It was based at Langley Field, Virginia throughout its existence, and equipped with Boeing B-17 Flying Fortress, Douglas B-18 Bolo, and Consolidated B-24 Liberator aircraft. It was disbanded on 20 April 1944.

The original mission of the group was the development of equipment and tactics best suited for aerial anti-submarine warfare. Among the devices that the group helped develop or test were the radar altimeter, the magnetic anomaly detector, the sonobuoy, improved airborne depth charges, long-range navigation systems, and airborne microwave radar.

The group also conducted training on equipment and antisubmarine tactics for Army Air Forces units and personnel. During the summer and fall of 1942, most of the unit's aircrews deployed to the Caribbean, where they conducted missions against German U-boats. After the Navy assumed responsibility for land based aerial antisubmarine operations in 1943, the unit continued to conduct radar training for bomber crews until it was disbanded.

The group was reconstituted in 1985 as the 365th Electronic Warfare Group, but was not active under that designation. It was redesignated the 365th Intelligence, Surveillance and Reconnaissance Group and activated at Nellis Air Force Base, Nevada, where it provides intelligence support for the Adversary Tactics Group and the United States Air Force Weapons School.