World War I in Color is a documentary designed to make the Great War come alive for a 21st-century audience.
The events of 1914-18 are authoritatively narrated by Kenneth Branagh, who presents the military and political overview, while interviews with historians add different perspectives.
The human cost is conveyed by moving interviews with the now very elderly survivors, and by extracts from letters and memoirs. All aspects of the war, on land, sea and air are covered in separate programmes.
The crucial difference between this and the WWII programmes is that the Great War wasn't filmed in color, and the footage has been computer colorized.