World War 1 in Colour is a six-episode television documentary series recounting the major events of World War I narrated by Kenneth Branagh. The first of its six parts aired on 23 July 2003. The series consists of colourised footage, with the colour of the images having been enhanced by computer-aided technology. It reportedly took 400 technicians over a period of five months to colourise the footage.The series investigates the development of warfare throughout the five years of World War 1 from all sides of the armed forces and also includes never before seen interviews from survivors of the Great War. In 2005, the series was released on DVD in the United States. The DVD is presented as two discs, with three episodes apiece on the two discs.