Possibly. It all depends on a number of factors, such as what you were arrested for, what your sentence is, etc. If you get arrested for a DUI, you won't be discharged. If you get arrested for capital murder, you most certainly will be.
Indeed you can
In the past there have been cases where a military officer was discharged.
If you served in the U.S. military and were honorably discharged, you are a military veteran.
Join the military service. (and be discharged)
You get discharged from the military.
Dahmer was in the military for just 5 months. he was discharged for drunkeness.
Not if the cops were not involved before hand or while you were in the hospital.
If they were discharged for being wounded in action then it may be in reference to the Medical Officers Report or possibly in the military bureaucracy it is Memorandum Of Record.
that depends on conditions you envoke or you feel hinder your retention in the military....
You may be discharged from the military for any condition that prevents your ready deployment. You may also be discharged for not disclosing a previously known condition, and such cases you could be charged and court marshaled.
Too broad a question to answer with any specifics. It depends on what he is arrested for - By whom he is arrested (civil or military authorities) - and where the arrest took place - by whom will he be prosecuted (civil or military court).
No, your military record will be researched as part of your background check and you will be disqualified for drug use. .