British troops in a communications trench near Thiepval, 1916. Imperial War Museum.↗
On July 1, 1916, the British Army suffered 57,470 casualties—the worst single day in its history. The Battle of the Somme would continue for four more months. Understanding why requires understanding what the generals actually knew.
57,470 British casualties on July 1, 1916. 19,240 dead. In a single day. The numbers are so extreme they have defined how the Somme is remembered—as futile slaughter, lions led by donkeys. The fuller picture is more complicated, more tragic, and more instructive about how industrialized warfare overwhelms even competent command.
British commander Douglas Haig expected a breakthrough. His confidence rested on a week-long preliminary bombardment of unprecedented scale: 1,500 guns firing 1.5 million shells. The logic was sound in isolation—no man could survive that weight of metal. The problem was German engineering. In the chalky Somme soil, German troops had dug dugouts 9–15 meters deep, reinforced with concrete. Most shells buried themselves harmlessly; a significant proportion—25% to 40%—failed to detonate.
When British troops went over the top at 7:30 AM, German machine gunners emerged from their deep dugouts and opened fire on infantry advancing at walking pace. The decision to advance slowly—because the bombardment was expected to have eliminated resistance—was catastrophic where the bombardment had failed. In other sectors where German lines were better damaged, British troops reached their objectives.
The Somme was not chosen as the ideal place to attack. It was chosen because it was where British and French lines met, and the French—desperately bleeding at Verdun, with 300,000 casualties by June 1916—needed immediate relief pressure. Haig attacked knowing the ground was unfavorable because his French allies were approaching the limit of their endurance. The Somme was, in part, an act of coalition solidarity.
Pegasus Books, 2008
Oxford University Press, 2018
Review, 2001
On November 20, 1917, 476 British tanks rolled forward at Cambrai without a preliminary bombardment and punched a six-mile hole in the German line. Within two days, a German counterattack had taken most of it back.
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