The Air Force's use of selection and classification test instruments for officer personnel started early in World War II with the development and use of the Aviation Cadet Qualifying Test and the Aircrew Classification Batteries. Current officer testing programs developed from research on the aircrew batteries and from a second line of research with the Aviation-Cadet Officer-Candidate Qualifying Test which began in 1949. This report gives a resume of the officer selection and classification programs from 1941 to 1961, and describes the various test instruments on their content and use.