World War I was the first modern global military conflict which took place in Europe between 1914 to 1918. Archaic military tactics met modern industrialized warfare for the first time, resulting casualties on a previously unimaginable scale. Men rotted in the mud, then were sent to face massed machine gun fire, modern artillery, tanks and chemical weapons. Over 40 million soldiers and civilians died and countless others were physically maimed or mentally scarred by the horrors of trench warfare. Music: Clint Mansell - 'The Last Man'.