Military Novels

I started to read The Things They Carried by Tim O'Brien for next semester. I don't actually know the plot thus far, but so far it is about a guy in Vietnam along with his company, explaining all of the things they carried with them.

I've not read many military books, though I did read The Forever War by Joe Haldeman. One of the major criticisms of the book is that the characters are bland with no development and not very deep.