Britain's Most Tragic Day at War in Photos

On 1 July 1916, British Tommies went over the top in what was the biggest attack in British military history, the Battle of the Somme. But Field Marshall Haig’s plan was flawed, and the troops suffered terrible losses. Instead of the breakout advance the Allies were hoping for, the army was bogged down in months of stalemate. 1 July is unlikely to ever be replaced as the most tragic day for the British Army.