I went to see it last night in Winston at the AMC12 in 3D and from what I've heard every show was sold out. There is nothing on a small screen to compare it to. Don't care a bit about anything out of Hoooollywould these days.
Peter Jackson did this for no fee at the behest of the BBC and the War Dept. He reviewed hours and hours of footage and audio from actual vets who were there. His problem is how to condense this down to a manageable size. The use of computer wizardry put correct colors on everything, set the 3D aspect and even corrected the frame rates from hand cranked cameras to what we are used to seeing today at 24fps. The net effect was to make the old footage look like it was shot very recently. Sound was taken from original guns and real artillery to overlay on the video. Forensic lip readers were able to reconstruct what was being said and Jackson got actors from the same area as the troops to do the voice overs so the accents would be correct. Two scenes really stood out to me, first was an officer reading a pre-battle speech to his troop prior to the Somme. Second was the Lancaster Fusiliers in a sunken road just prior to attacking the Germans. Nearly every one in that road was killed or wounded in that attack that happened not 30min after the film was shot. The looks on their faces told it all.
One incident related by a vet in the film was of the German and England national rugby teams having a team dinner together. They were interrupted by an announcement that war had been declared. They were trying to decide whether to fight right then and there, but decided instead to have a good dinner together and start hostilities the next day.
Another incident that I've read about and the movie mentioned, and since I'm a soccer official, was the Irish dribbling soccer balls across No Man's land in an attack. Yes, it really happened, and one of the soccer balls is in a museum. As an official, I've wondered what would be considered a foul and what was a fair challenge. Yellow card for shooting people in the legs or arms and Red card for head shots?
The Truce of 1914 was only mentioned but there is so much material, Jackson had to be very selective. There is a great movie about the truce and it's supposed to be pretty accurate as the general facts about it-
Joyeux Noel
https://www.imdb.com/title/tt0424205/