You will have to talk to an AF Recruiter. A lawyer can't answer that question.

What would happen if I were caught driving while high on marijuana on a military base as an active duty soldier?

Seriously? You will likely be arrested for DUI, lose your license, and be kicked out of the military.

How do I sue the military for wrongful discharge

You can't sue them. There is a process to apply to have the wording taken off your DD 214 if you can prove that it is inaccurate.

What do I need to do to prove accidental ingestion (of THC) for a failed UA?

You don't have to prove it. They have to prove that you knowingly ingested THC. If you come up positive, do not answer any questions. Invoke your...

Can a veteran be charged with desertion if they frauded their separation by faking an attempted marriage while in the US army?

I can't imagine any prosecutor charging this, but I have been surprised before.

Can someone help me start the emancipation process?

No court is going to emancipate you at 16. Your boyfriend's mom could get in trouble for contributing to the delinquency of a minor.

VA Medical benefits

Your general discharge is unlikely to preclude you from medical benefits.

That is a question for a recruiter, not a lawyer.

I suspect he will get in serious trouble.

Can I file harassment charges against a army recruiter ?

This is not harassment. This is the Army. Good grief.