3903rd Radar Bomb Scoring Group

The 3903rd Radar Bomb Scoring Group was a military evaluation unit under direct command of Strategic Air Command (SAC) headquarters for scoring simulated bomb runs using automatic tracking radar stations. Initially an Army Air Forces Base Unit (AAFBU) and then a squadron, the 3903rd RBS Group was personnel, assets, and detachments were redesignated the 1st Radar Bomb Scoring Group and then the 1CEVG Radar Bomb Scoring Division when the RBS Group merged with the 3908th Strategic Standardization Group in 1961, the year RBS Express trains began to be used for low-altitude Boeing B-52 Stratofortress operations..

Automatic tracking radars were used for World War II ground-directed bombing, and at the end of the war SCR-584 tracking radars with OA-294 plotting equipment which recorded the aircraft path during a bomb run, allowing the bomb release point and velocity to be assessed for Radar Bomb Scoring. In 1945, an RBS site was in New Orleans on Marconi Dr, and the 206th Army Air Force Base Unit (RBS) was organized on 6 June 1945 at "Colorado Springs" (tent camp) and controlled RBS detachments at Kansas City and Dallas Love Field, Texas. "On 24 July 1945, the 206th was redesignated the 63rd AAFBU (RBS) and three weeks later was moved to Mitchel Field, New York, and placed under the command of the Continental Air Force." "On 5 March 1946, the organization moved back to Colorado Springs and on 8 March of the same year was redesignated the 263rd AAFBU."

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