May 27 is Memorial Day in the US and Google Play has several military themed movies on sale. One that I’d recommend is the WWI documentary They Shall Not Grow Old by Peter Jackson.
Jackson and his team of filmmakers have taken original footage and audio recordings from The Great War and cleaned them up digitally. The result is an amazing and fresh look at one of the most deadly conflicts in human history.
The HD film is half off, only $10, right now on Google Play and is Movies Anywhere eligible. If you have even the slightest interest in the subject I highly recommend you check it out.