There was a series over here called World War I in Colour
Episode 1 - Catastrophe
Episode 2 - Slaughter in the Trenches
Episode 3 - Blood in the Air
Episode 4 - Killers of the Sea
Episode 5 - Mayhem on the Eastern Front
Episode 6 - Victory and Despair
Episode 7 - Tactics & Strategy - Episode narrated by Robert Powell
Episode 8 - Making the Series