Anyone wishing to see at truly amazing documentary on WW I, watch They Shall Not Grow Old, produced by Peter Jackson. Colorized film, and also determined what the soldiers were saying, and had actor voice their words. The narration was from actual soldiers who served during WWI. They were interviewed as a vast project to save the personal history of the troopers who fought in the war.
I loved that! I was especially moved by the soldier’s rendition of “Mademoiselle from Armentierres’