I contacted the County Clerk before boot camp and signed up for an absentee ballot. I kept them informed of my whereabouts every time I moved.
I never missed an electrion in six years, but then I took persoanl responsibility for assuring my ballot could find me.
The guy here in my township was in the process of shipping out of Afghanistan and headed for Fort Hood. Apparently during his last month he wasn’t firmly attached to any particular unit and was floating. He showed up at the township office while he had 5 days leave before reporting to Texas.
Sounds like they just let him vote absentee rather than try to fix things.