I heard about this while I was accidentally watching the first few minutes of the O'Reilly Factor:

The U.S. Military is demanding that thousands of wounded service personnel give back signing bonuses because they are unable to serve out their commitments.

To get people to sign up, the military gives enlistment bonuses up to $30,000 in some cases.

Now men and women who have lost arms, legs, eyesight, hearing and can no longer serve are being ordered to pay some of that money back.
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Fox was seriously injured when a roadside bomb blew up his vehicle. He was knocked unconscious. His back was injured and lost all vision in his right eye.

A few months later Fox was sent home. His injuries prohibited him from fulfilling three months of his commitment. A few days ago, he received a letter from the military demanding nearly $3,000 of his signing bonus back.

Of course, the reason they can't finish their commitments is because they were wounded in battle!  So Uncle Sam is now saying, "thanks for serving your nation, sorry about your back and eyes, now where's my money?"  This policy needs to be reversed ASAP.  It's disgusting, and an insult to those who have served honorably and sacrificed for everyone.