By Quetzalcoatl.Princemercury 2010-06-14 18:44:31
I think they charge the moment you hit I agree.
As far as military service, SE doesn't give a ***sadly, there's one thread floating around about someone going in, then getting back finding out his account was 17ed because of a charge back. He brought it up with SE explaining the issue, they forwarded him to the account manager as usual.
Edit: "going in" - going into service.