If you're serious about joining the military, then get serious about the Armed Services Vocational Aptitude Battery (ASVAB).
WHAT IS THE ASVAB?
The ASVAB is a timed multi-aptitude test, which is given at over 14,000 schools and Military Entrance Processing Stations (MEPS) nationwide and is developed and maintained by the Department of Defense.
HOW IMPORTANT IS THE ASVAB TEST?
Your scores in four critical areas -- Arithmetic Reasoning, Word Knowledge, Paragraph Comprehension and Mathematics Knowledge (see below) -- count towards your Armed Forces Qualifying Test (AFQT) score. The AFQT score determines whether you're qualified to enlist in the U.S. military.
Your scores in the other areas of the ASVAB will determine how qualified you are for certain military occupational specialties and Enlistment Bonuses. A high score will improve your chances of getting the specialty/job and signing bonus you want.
Scoring high on the ASVAB will require study and concentration
ASVAB Retest Policy
ASVAB retest policy requires a one-month wait between administration of the initial ASVAB and a retest. To retake the ASVAB a second time, another one-month wait is required. For any additional retests, a six-month wait is required between retests.
The retest policy is the same, regardless of whether the initial test is a student test or an enlistment test.