Up Front by Bill Maudlin.
This is a reprint of the book Bill Maudlin wrote near the end of WWII featuring his famous characters Willie and Joe. The text is a background for the cartoons, but adds depth to the cartoons, along with explanation and even some apologies.
I was looking through the book for good quotes but started to reread the entire thing, so I think I'll just say it's worth reading. Especially now, when we have a new generation of dogfaces dealing with the problems of war. And while the issues they face aren't the same as the men in WWII, they still need our understanding. If you can get your hands on this book, read it. It's worth your time.