This scene is from the movie. “They Shall not Grow Old”. The film was created using original footage of World War I from the Imperial War Museum’s archives, most of it previously unseen, alongside audio from BBC and IWM interviews of British servicemen who fought in the conflict. Most of the footage has been colorized and transformed with modern production techniques, with the addition of sound effects.
Colorized Footage Shows Soldiers Reacting to the End of WWI