I agree completely with "Dr. Hypersonic". I just finished reading this book yesterday; it's one of the best I've read in a very long time.
It's the story of a Marine Company near the US withdrawal of troops from Korea. It taught me things about the Korean War I never knew, but more than that, it was a story about honor, almost forgotten in modern society, under extremely difficult circumstances. At the end of the book when an exhausted Sergeant Ekland said, "These are not stragglers, sir. This is Dog Company," I cried.
If you read only one book in 2005, you can't go wrong with this one.