The Air Force Handbook 1 phone application, available beginning Sept. 6, 2019, on both Apple and Google Play, includes the AFH1 and a study guide, as well as Air Force Instruction 36-2618, The Enlisted Force Structure, known as the “The Little Brown Book.” There is also access to the “The Little Blue Book” focused on the profession of arms, as well as tools such as flash cards, audio and practice tests designed to help prepare Airmen for promotion testing. (U.S. Air Force graphic by Dan Hawkins)
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