First off, if questioned, say nothing. Invoke you right to remain silent. You may want to retain civilian counsel. Generally, the USMC, they will...

Do I qualify for Deferred Action through my brother who is in the US Army and a citizen of US?

This is not a military law question. I have moved it to Immigration Law.

Can i get a complaint of my leave in partner in frudelent,she is a police officer she enlist in police w/a one kid

I have no idea what you are asking. Perhaps you can rephrase or get someone to assist you in writing it.

How difficult is it to upgrade my military discharge?

Every case is different and every lawyer is different. You should send your discharge papers to a lawyer to have them review it and to give you an...

You cannot request a DNA test. But your son can, and should if he is unsure if he is the father.

How do I find out why the military is investigating me ?

Get a lawyer. Now. And if you are approached by CID tell them you don't want to say anything and you want a lawyer.

CCan I get a waiver to get on a military base? to do construction

Yes you can apply for a waiver. Impossible to say whether it will be granted.

If debarred from all US installations in Europe does it mean i cannot go to work on US installations anywhere else ?

You ask two different questions. Does it "show up?" Yes. Does that stop you from working on installations not covered by the debarment letter? No.

Mr. Port is correct. Do not lie. Speak to the recruiting station commander and explain the situation.

You must have legal status to enlist in the military.