no
no
Only if they have U.S. Citizenship
you need absolutely no training what-so-ever to join the Marine Corps. The Marine Corps itself will provide any and all required training.
18, or 17 with parental permission.
Be a Republic of Korea citizen
of course you can! they just need the help.
The percent of high school graduates who join the Marine Corps is 0.3% out of the ones that are considered fit for duty. Less than 1,800 people end up enlisting in the army.
NO.Or Perhaps:Yes. Or it should be. It is after all something like a Marriage for Life, after all, Once a Marine, Always a Marine.
You'd have to wait until the end of your current enlisted, if you're currently enlisted in the Marine Corps on active duty. If you wish to go from the Marine Corps Reserve into the Regular Army, that can be done, though.
You can join any military branch after the Marine Corps, with a clean record of course. You won't have to go through their basic training though.
That depends on what service you join. The Marine Corps is approx 13 weeks.