Triggered by the assassination of just one man in 1914, World War I saw a death toll of millions upon millions of people, soldiers and civilians alike. The front line saw around 25,000 miles of trenches dug, the average life expectancy of a pilot was just 15 hours, and 70 million soldiers were mobilised worldwide. `The Great War in Numbers' sheds light on one of the most catastrophic conflicts of modern history, putting the sheer destruction into context through the use of numbers and statistics.