Ensign Charles Ewart (1769 – 23 May 1846) was a Scottish soldier of the Royal North British Dragoons (more commonly known as the Scots Greys), famous for capturing the regimental eagle of the 45e Régiment de Ligne (45th Regiment of the Line) at the Battle of Waterloo.
He was born near Kilmarnock (although recent research has found htat he may have in fact been born nearer Moffat). in 1769, and enlisted in the cavalry at the age of twenty. He fought in a number of actions in the French Revolutionary Wars, was briefly taken prisoner, and emerged from the conflict as a Sergeant in the regiment. Over the next two decades he became a well-respected and competent soldier, serving as fencing-master of the regiment; a heavily built man, reported as 6'4" tall and "of Herculean strength" he was an expert swordsman and accomplished rider.
At Waterloo, the Greys were part of the Union Brigade, a formation of heavy cavalry regiments held in reserve by Wellington. In the line of battle, General Thomas Picton's 5th Division was held in reserve, on the right of the Allied line, behind the Dutch-Belgian 2nd Division. The 5th contained a number of experienced veteran units from the Peninsular War, including the 92nd Foot (Gordon Highlanders).
After a heavy exchange of fire, the Belgians were forced to fall back to the far side of the ridge on which they were stationed, and the 5th Division moved forward over the crest of the ridge to hold the line. After the heavy exchange of fire continued, with the 5th holding firm, it was decided that the division should charge to break up the French columns; the cavalry held in reserve were brought forward, and passed through the ranks of the infantry and into action.