There's a ton of data here on the exact composition of the Iraq military forces, right down to describing the history of each division's military encounters, and the estimated types and quantities of equipment, guns, missiles, aircraft/helicopters, and so forth. There are also some extremely detailed maps of Iraq, and even aerial reconnaissance pictures of specific buildings in Baghdad (though I think that some of those buildings are definitely past-tense at the moment!).

On the plus side, the news ticker on this site seems to be up to the minute. On the minus side, some of the troop descriptions are very out-dated. Certain sections obviously haven't been updated since the 1991 Gulf War, whereas other sections seem to be current only up to around 2001, though I did see a couple pages that were current as of August 2002. Also on the minus side, though there does seem to be a map showing locations of military units, there's no date on it to indicate whether this is something relatively current, or if it too is a decade old.

Still though, for the sheer quantity of other information at this site (and the up-to-the-second news ticker), I recommend this link.

P.S. What I'd really like to find is a Java or Flash page that shows not only current Iraqi troop positions as reported in the media, but also a scrollable timeline so I could see how those positions have changed over the last several days. I haven't had any luck finding something like that, but if anyone else spots one, please Meme it!

GlobalSecurity.Org: Iraq Military Guide