Since when do you "try" enemy soldiers in civilian courts during war?
Do you think we tried all of the Japanese/Italian/German soldiers during WW II?
Do you think we tried any of the central soldiers during WW I
Do you think we tried any Korean soldiers during the Korean War?
This is a silly fallacy that we have that these people deserve a trial, and if convicted get to stay in prison. I am sorry - that is not how our international treaties work, enemy combatants are kept until the war is over (remember that we actually did declare war here, this isn't a police action). When the war is over we release the prisoners back to their home countries.
To be quite honest here, many of the remaining prisoners at Gitmo can't be released because their home countries aren't stupid enough to take them back... We tried and they don't want them either. What should we do?