World War I was the first conflict fought at a scale where almost everything got recorded: casualties, shells fired, miles of trench dug, tons of supplies moved. This documentary uses that mountain of data to put a number on what the war actually cost, tracking how commanders on both sides treated soldiers as a resource to be spent rather than protected. It moves through the war's major fronts and campaigns, using archival footage and statistics to show how attrition became the actual strategy, generals accepting horrific casualty rates because the numbers on paper said they could still win that way. The focus stays on scale rather than individual battles, building toward a picture of just how staggering the human toll was once you add up four years of industrialized killing. It is a numbers-driven look at a war usually told through mud and trenches, and the arithmetic is the argument.