It has to do with brian smarts how smart are you to pass the ASVAB ,And can you pass the ASVAB with a high score .Then join the Air Force or Navy . Do you like a warm bed and hot food very night then the air force and navy are for you. If you like the hard road and do prefer the dirt and bugs and cold temperatures of outside the Marine corp and Army are your best beat .The mortality rates are higher in the army and marine corps
Air Force
Air Force recruits must score at least 36 points the 99-point ASVAB
You're more likely to be struck by lightning than enlist in the Air Force without a high school diploma. Even with a GED, the chances are not good. Only about 1/2 of a percent of all Air Force enlistments each year are GED-Holders. To even be considered for one of these very few slots, a GED-holder must score a minimum of 65 on the AFQT. The Air Force allows a higher enlistment rank for recruits with college credit.
Marine Corps
Marine Corps recruits must score at least 32
"for some exceptionally otherwise qualified recruits with scores as low as 25 with a ASVAB Waiver." only 1 ? year are give this .
Marine Corps limits GED enlistments to no more than five percent per year. Those with a GED must score a minimum of 50 on the AFQT to even be considered.
Navy
Navy recruits must score at least 35 on the AFQT
" Reserve enlistment programs still only require a score of 31. "
the Navy accepts very, very few recruits who don't have a high school diploma. To be considered for enlistment with a GED, you must score a minimum of 50 on the AFQT. You must also have no drug use, and at least three references from influential members of the community (police, fire, judge, teacher, ect.). Any police involvement, other than minor traffic offenses will also disqualify a GED applicant.
Coast Guard
The Coast Guard requires a minimum of 40 points on the AFQT. A waiver is possible if a recruit's ASVAB Line Scores qualify them for a specific job, and the recruit is willing to enlist in that job. Education - For a very few (less than 5 percent) who will be allowed to enlist with a GED, the minimum AFQT score is 50. The CG offers advanced enlistment rank of E-2 for 30 college credits, and E-3 for 60 credits.
ARMY
The Army allows more recruits to enlist with a GED than any other branch. In Fiscal Year 2008, only 83 percent of new Army recruits had a high school diploma ASVAB Score - The Army requires a minimum AFQT Score of 31 to qualify for enlistment. However, in recent months, the Army has been approving more and more waivers for those with scores as low as 26 (Category IVA). To qualify for certain enlistment incentives, such as enlistment bonuses, an Army recruit must score a minimum of 50. or have a ASVAB WAIVER signed for low scores in the 26?ange. In 1960 49?ad waivers .1980 20?2000 5?ut it has gone up again in 2003 due to low monthly Enlistment reports.
Source(s):
:http://usmilitary.about.com/cs/genjoin/a...