They weren't "prison camps". They had schools on site, sports facilities, etc. Wikipedia notes "Nearly a quarter of the internees left the camps to live and work elsewhere in the United States, outside the exclusion zone." (the zone was the West coast.)
Wikipedia says 20,000 served in the military, mostly in the European Theater for obvious reasons, and I hope you all know of the 442nd Regimental Combat Team (http://en.wikipedia.org/wiki/442nd_Infantry_Regiment_%28Unit...) which earned a serious reputation and was the subject of a very favorable movie in 1951 (i.e. before the US was particularly enlightened). 7 Presidential Unit Citations (fine in one month, probably for the Vosges mountains rescue operation, that whole campaign was very tough and fought in terrain that has favored defenders for millennia (http://www.amazon.com/When-Odds-Were-Even-1944-January/dp/03...), 21 Medals of Honor, 41 net DCS, 560 Silver Stars all the way down to 9,486 Purple Hearts for a unit of 3,000 men....
Anyway, the point of all of the above is that this was complicated. The simplistic trope of "we threw them in concentration camps like Nazis" just doesn't hold up to even casual examination.
Wikipedia says 20,000 served in the military, mostly in the European Theater for obvious reasons, and I hope you all know of the 442nd Regimental Combat Team (http://en.wikipedia.org/wiki/442nd_Infantry_Regiment_%28Unit...) which earned a serious reputation and was the subject of a very favorable movie in 1951 (i.e. before the US was particularly enlightened). 7 Presidential Unit Citations (fine in one month, probably for the Vosges mountains rescue operation, that whole campaign was very tough and fought in terrain that has favored defenders for millennia (http://www.amazon.com/When-Odds-Were-Even-1944-January/dp/03...), 21 Medals of Honor, 41 net DCS, 560 Silver Stars all the way down to 9,486 Purple Hearts for a unit of 3,000 men....
Anyway, the point of all of the above is that this was complicated. The simplistic trope of "we threw them in concentration camps like Nazis" just doesn't hold up to even casual examination.