Battle of the Somme (1916)

The Battle of the Somme, fought from July to November 1916, produced over one million casualties — including 57,470 British casualties on the first day alone, the bloodiest single day in British military history. It was the first large-scale deployment of tanks in warfare, and it demonstrated that industrial-age technology had made traditional territorial advances catastrophically costly. The psychological and cultural impact on Britain was immense: the "lost generation" of young men sent to die in industrial slaughter fundamentally altered public attitudes to war, empire, and the relationship between the citizen and the state.