18 or 17 with your parents permission.
When you turn 28 years old you can not join the Air Force.
17. See related link.
The services always preferred men 18 or older.
well ive heard from friends and family that u must be 16 years old to join the navy if your parents agree to sighn off papers (: other wise you have to be 18 year old. =/
In order to enlist in the military you must the ages of 18-36 or if you have a parent's permission then you may enlist at 17.