On 18 Jun 1815 the Battle of Waterloo was fought.

Beaumont Hotham 3rd Baron Hotham (age 20) was present.

Charles Augustus Fitzroy (age 19) was wounded.

Lieutenant-Colonel Henry Edward Irby (age 31) fought.

Henry William Paget 1st Marquess Anglesey (age 47) led the charge of the British heavy cavalry against Comte d'Erlon's column which checked and in part routed the French Army. He was hit by one of the last cannon shots of the day necessitating the amputation of this leg during the Battle of Quatre Bras.

Fletcher Norton 3rd Baron Grantley (age 16) fought and was wounded.

Charles Francis Rowley Lascelles fought.

Edward Kerrison 1st Baronet (age 38) commanded his Regiment.

George Orlando Gunning (age 18) was killed whilst serving as a Lieutenant in the 10th Hussars.

On 19 Jun 1815 Lieutenant Colonel Alexander Gordon (age 29) died having had his leg amputated the previous day.