If you're sending care packages might I recommend a, um, personal item to include? Cream and powder for athlete's foot and jock itch. My fiance is in Baghdad right now, and he begged me to send him some ASAP. Apparently he was having a difficult time finding any there. (You would think they would stay stocked up on that sort of item!) Anyway, given the heat (which isn't actually bad right now), the sweat, and mainly the constant layer of grime, it's pretty difficult to avoid those problems.
Between me and his mom, my fiance gets whatever he needs. But he has mentioned that he feels bad for some of the guys who have no family to write to them and send them things, so I'm sure they really appreciate receiving care packages.
The mail system can be kind of weird. I've mailed a package to him (in Baghdad) and to a friend in New York at the same time (I'm in the U.S.), and his package arrived first (in 5 days!!!). Other times I've sent stuff and it never gets there, and 2 or 3 times the military has sent stuff back labeled "addressee unknown." I repackage it, slap on the same mailing label, send it out again, and it goes through the second time. There's no rhyme or reason to it!