The Lord of the Rings director is teaming up with bosses at the BBC and London's Imperial War Museum to create the new film using original footage from their archives.
Peter Jackson is switching his attention from epic fantasy conflicts to a real-life Great War.
Peter Jackson is making a documentary about World War I to mark the centennial of the battle's end.
Deadline reports that Jackson is now directing the feature length documentary film, which is set to premier at the BFI London Film Festival later this year.
Relevant trivia: the last time Jackson directed a "documentary" was the 1995 hoax film Forgotten Silver, for which he faked turn-of-the-century footage; now he's going in the other direction and restoring some.
Events specialist Trafalgar Releasing will coordinate a United Kingdom -wide release of Jackson's film to coincide with the LFF premiere. The result is a unique and thought-provoking film that has discovered stories and perspectives on the war never-before presented to the public, brought to life by Peter Jackson's acclaimed cinematic skills.
"We're making a film [that is] not the usual film you would expect on the First World War". You can see a trailer for that film below...
Somewhere, there also exists a 15-minute short film set during the conflict, Crossing The Line, that Jackson shot as a Red One camera test prior to making The Hobbit.
The producers sifted through hundreds of hours of interviews with veterans in order to focus on the personal experiences of the people involved.
BBC Director-General Tony Hall said: "We see 2018 as our chance to inspire a new generation with extraordinary stories of courage and sacrifice".