The upcoming documentary, Brothers at War, looks like it will be a powerful and intimate look at the effect of service within a family. The film was made, directed and produced by a brother of two men serving in Iraq. Because this is a low-budget, under-the-radar documentary, you may need to petition to have it shown in your area. The official movie site has a form to promote showings.
movie site: http://www.brothersatwarmovie.com/#/Home