Also, many of these people signed contracts that they are not allowed to break or change but that the government can and does break and change willy-nilly. My coworker has a contract that says something like she can be called upon for 180 days of service with a year off in between. Her call to duty papers called her to active duty in Kuwait for 536 days. She wound up serving ~400 (because Halliburtion was given all the work instead of the army engineers). War or no war, that was not the contract she agreed to. She served it and is now back, but I'm still infuriated. (Apparently there is fine print that allows this one sided wiggle room.)
This employee probably has no recourse if she's called up to serve more than what she signed on to do, but go ahead and sign the hardship stuff.
I was thinking about it the other day though, and we've got standing troops >150,000, and more rotating through all the time. ~2000 have been killed and ~20,000 severely injured. That's actually a better mortality rate than being president of the US.