>Living in a town near a base, I still hear military time on a regular basis. It is different, but after spending so much time in the military you get used to it. If you need to meet someone at 4:30am, you would say "oh four thirty" and 3:00pm would be '1500 hundred.' There is a little bit of 'slang' expressed sometimes, for instance, it is common to say in lieu of 12:30am in civilian time (0030 in military): 'oh dark thirty.'

Interesting - I've only ever heard "oh dark thirty" used jokingly, to refer to any ridiculously early time to get up (for catching a plane flight, going fishing etc.) I didn't realize there's an official translation for that ;)