Order of battle of the Battle of Quatre Bras

The following units and commanders fought in the Battle of Quatre Bras on 16June 1815 at Quatre Bras in the Belgian province of Wallonia. The numbers following each unit are the approximate strengths of that unit. Field Marshal Arthur Wellesley, Duke of Wellington

Headquarters and support regiments
Major General His Royal Highness Prince Willem of Orange G.C.B.

Reserve
Under the command of Wellington.

Brunswick Corps
Frederick William, Duke of Brunswick-Wolfenbüttel (KIA)

II Corps
Gen de Division Reille

III Cavalry Corps
Gen de Corps d'Armee François Étienne de Kellermann, Comte de Valmy