I saw an article about Spc. Robert Loria on the news last night and did a little digging. It seems to be standard policy that once a soldier is wounded in Iraq and sent home his pay while in the hospital is reduced, has to pay for his transportation back to his home base and to the hospital and will be charged for any field equipment that he fails to bring home with him. Until last month they were even charged $8.10 a day for meals while in the hospital.
In Spc. Loria's case that added up to $6,000. The army claimed all his back pay and would not let him leave the base until he paid the remaining $1,600. When his wife raised a stink some politicos steped in and the Army relented but this appears to be happening all the time.
(The obligatory sites for Gunner)