There is a show based from this book. They're both called Generation Kill
The book was written by a soldier and tells you a lot about his experience. I haven't actually read it, but it was recommended to me.
Edit: I thought of another one. Marine Sniper is also written as a firsthand account but takes place in Vietnam.
Generation Kill by Evan Wright http://www.amazon.com/Generation-Kill-Evan-Wright/dp/0425224740/ref=sr_1_1?ie=UTF8&qid=1308856301&sr=8-1 10 bucks on Amazon.
Generation Kill was pretty damn awesome. I blew through it in about 2 days. Much better than the show on HBO.