The WW I documentary "They Shall Not Grow Old" by director Peter Jackson, a New Zealander whose grandfather was a soldier badly injured whose civilian life was shortened by the war. I was particularly drawn to this film for my wife whose dad was a very young U.S. recruit who served in the trenches and was burdened by the aftereffects of poison gas for his entire life ever after. The brilliance is that the film is technically enhanced using computers, colorization, and lip readers to add dialogue, and extensive recordings of oral history by actual veterans. The harrowing battle and artillery bombardment scenes, and the many scenes of casualties is heartrending and horrifying, but authentic. Pipe people will appreciate the dusting of film of soldiers behind and in the trenches enjoying pipes, mostly trim, portable clenched billiards and Dublins, but at least one extravagant cavalier that must be close to two feet long. This film focuses on English (and Welsh and Scots) soldiers, though the director is a New Zealander, but he notes that the experience was shared as well by the Germans, Americans, and many English colonial troops, since the carnage was common to most combat participants. If you can view it, it is well worth the time.