Indeed. Recent Federal legislation now allows non-citizens to obtain US citizenship after only 2 years service-and immediate Green cards (permanent residency) for almost all family members. If one is KIA, then you automatically receive citizenship-and so does everyone in your family. It is estimated that @ 5-10% of the US army is non US born and @ 3-5% are "foreign" (Green Card residents, not citizens as Dave noted above). These numbers are less in the USAF and navy and MUCH less in the coast guard. Almost NO officers are foreigners however. There are a few exceptions and where I have encountered them, they are either Canadian, Israeli or (very rarely) British and/or specialists. I should note that a person with prior British army experience gets some special treatment in the US forces. In some instances basic enlistments are only for 2 years. This 2 year enlistment was common and standard in the basic ranks in the late 1970s and early 1980s, when the armed forces were falling apart. My best friend, an ex-Captain in the WOFRs with about 8 years service in Ulster alone (15 years total service, not including territorial army time) went into a local recruitment depot @ 2003 and asked about enlistment in the US army reserves. Upon learning of his background, the sergeant-a friend of mine turned to me and said, "if he signs up, I made my quota for two months". My friend (the WOFR Captain) was promised an instant Lieutenancy with a fast track to Captain and $50,000 enlistment bonus to go regular army. He was offered the same commission deal but (only) $30,000 to go into the reserves. If he had done it his medal bar would have been a fascinating bit of history. https://secure.military.com/Recruiting/page...rec_army_gen.kw