Book excerpt: From an exam insider, a vital guide to the ASVAB subtests essential to a successful start of your military career Of the eight ASVAB subtests, four--word knowledge, paragraph comprehension, arithmetic reasoning, and mathematics knowledge--comprise what is called the Armed Forces Qualifying Test (AFQT). You must achieve certain AFQT scores or you may be barred from certain military occupations--or even from the military itself! McGraw-Hill’s ASVAB Basic Training for the AFQT provides you with intensive review and practice specifically targeted to the AFQT portion of the ASVAB. This guide includes drills, exercises, review material, and inside information on the minimum “line scores” required to qualify for hundreds of specific military occupations.