Which British general was killed shortly after ordering a counterattack?

Thomas Picton was the British general killed shortly after ordering a counterattack at Waterloo. He commanded the Allied 5th Division, which faced the assault of Jean-Baptiste d'Erlon's French I Corps on 18 June 1815.

Picton had been wounded at Quatre Bras two days earlier but concealed the injury and remained in command. When the French attack threatened the Allied centre-left, he ordered his troops forward in a forceful counter-attack. The advance helped break the French assault, but Picton was struck in the head by a musket ball and died on the battlefield.

He was the most senior Allied officer killed at Waterloo. The incident is sometimes confused with the deaths of other senior commanders, including Lieutenant General Sir Thomas Graham, who survived the battle, and Lord Uxbridge, who lost a leg but lived. Picton’s final action helped stop d’Erlon’s advance, although the Allied infantry paid heavily for the victory.