I didn't know it expired at a certain age. I thought you were pretty much in it for life.
Nope. Just from the ages of 18-25, and it only applies to males... which is really sexist if you think about it.
There are ways you can get out of it if it ever does happen, though. For example the rock musician and gun nut Ted Nugent got out of being drafted to fight in Vietnam by crapping his pants.
And would they even take someone so short that most women are taller than him? I seriously doubt I could ever fight in a war with the physical prowess I have at this point in my life.
I'm not sure how much height matters in that. As long as you are able to carry an M16 you probably strong enough as far as the army is concerned. I read that in the Vietnam war really short guys were preferred because they were small enough to go into the Viet Cong tunnels and hunt them down where taller guys couldn't fit.