The average time for the BCMR is a year in the Army, 3 in the AF. Absent a change in his RE Code, he will not be able to reenlist.

Under the circumstances you describe you would not be entitled to separation pay.

What military discharge can I get?

The Navy is notorious for using "adjustment disorder" to not provide benefits to those with mental health issues. Go see the local base defense...

There are some benefits available to you, although the main ones (GI Bill, VA Loan, etc) are not. Make an appointment with the VA, and they can go...

No you cannot sue the Navy foe not letting you take a class.

I am sorry for your loss. A discharge would have to be initiated by your treating physician through the Medical Evaluation Board process. Speak to...

Could I face a dishonorable discharge?

No you cannot get a Dishonorable Discharge, as this only comes from a court-martial. You could, however, receive an Other Than Honorable Discharge...

Can I sue the national guard? ; had a pilonidal cyst. I was born without a spleen. Learned that last year.

Sue them for what? You haven't provided any facts that suggest any grounds for a lawsuit.

He needs to check with his detailed military defense counsel, or his civilian counsel if he had one.

Wanting to join the Navy

Questions about whether you can join the military should be directed to a recruiter, not a lawyer.