Great WWI documentary where they digitized and colorized original WWI film. Saw it last month and it was really well done. If you go stay through the credits to watch how they made it.
https://www.businesswire.com/news/home/20190103005760/en/Peter-Jackson's-"They-Grow-Old"-Date-Fathom
https://www.businesswire.com/news/home/20190103005760/en/Peter-Jackson's-"They-Grow-Old"-Date-Fathom