The officer candidate tests include the Armed Services Vocational Aptitude Battery (ASVAB), Air Force Officer Qualifying Test (AFOQT), and Aviation Selection Test Battery (ASTB). While these tests are different, they have a few similarities. All the tests, for example, include Verbal and Math subtests. Some tests include a General Science subtest, but others don’t. Your preparation for taking an officer candidate test largely depends on which branch of the military you work for.