Battle of Talavera order of battle

 
The Battle of Talavera (27–28 July 1809) saw an Imperial French army under King Joseph Bonaparte and Marshal Jean-Baptiste Jourdan attack a combined British and Spanish army led by Sir Arthur Wellesley. After several of their assaults were bloodily repulsed on the second day, the French retreated toward Madrid leaving the battlefield to the Anglo-Spanish army. Events soon compelled Wellesley, who was soon appointed Viscount Wellington, to fall back toward his base in Portugal. The following units and commanders fought at the battle, which occurred during the Peninsular War.
Anglo-Spanish Army.
Commander-in-Chief of the Anglo-Spanish Army: Lieutenant General Sir Arthur Wellesley
British Army.
Commander-in-Chief: Lieutenant General The Rt Hon Sir Arthur Wellesley KB
Total Anglo-Spanish forces: 52,735, 66 guns
Spanish Army.
Commander-in-Chief: Lieutenant General Don Gregorio Garcia de la Cuesta y Fernández de Celis, Captain-General of Castilla
Spanish cavalry units ending in a number (Nr.) are regular units and so is the Carabineros Reales Regiment. Other cavalry units are probably newly-raised volunteers. Regular units titled Cavalry are heavy cavalry while units titled Cazadores are light cavalry. Units labeled Regiment are probably regular infantry from the old army, though Badajoz, Canarias, Mallorca, Osuna and Salamanca are not in Charles Oman's list. Units labeled Cazadores Regiment are regular light infantry. Infantry units titled Granaderos or Provincial are the standing militia units from the old army. All other infantry units are probably newly-raised volunteers. 
French Army of the Centre.
Total French forces: 46,180, 84 guns
I Corps d'Armée.
Marshal of France Claude Perrin Victor, Duke of Belluno
IV Corps d'Armée.
General of Division Horace-Francois-Bastien Sebastiani de La Porta
Reserves.
King Joseph Bonaparte