If anyone is interested in war documentaries then I'd recommend you watch this documentary about the Vietnam conflict. It covers the Ong Thanh battle, where American forces were ambushed and decimated. It also goes into how the students felt about the war back in America and how they demonstrated against War profiteering companies.
Rather than just have you listen to some historian going on, They talk to the troops that fought in the battle (from both sides), and the students who opposed the war.
I thought it was really good and well worth a watch.
http://www.youtube.com/watch?v=lI