Battle of Barrosa order of battle

Below is the order of battle for the Battle of Barrosa, also known in Spain as the Battle of Chiclana. The battle took place on 5 March 1811 during the Peninsular War between the Allied Army of Sir Thomas Graham and Manuel Lapeña against the French I Corps of the Armée du Sud (Army of the South) of Marshal Perrin.

I Corps (Army of the South)

 * I Corps, Armée du Sud 
 * Commanding Officer; Maréchal d'Empire Claude Victor-Perrin, 1er Duc de Belluno
 * 1st Regiment of Dragoons (3 squadrons)
 * 2nd Regiment of Dragoons (3 squadrons)
 * 4 Foot Artillery Batteries
 * 1st Division; Général de Division François Amable Ruffin
 * Combined Grenadiers (2 battalions)
 * 24th Regiment of Line Infantry (1st and 2nd battalions)
 * 96th Regiment of Line Infantry (1st battalion)
 * 9th Regiment of Light Infantry (2nd battalion)
 * 2nd Division; Général de Division Jean François Leval
 * Combined Grenadiers (1 battalion)
 * 45th Regiment of Line Infantry (1st battalion)
 * 54th Regiment of Line Infantry (1st and 2nd battalions)
 * 8th Regiment of Line Infantry (1st and 2nd battalions)
 * 3rd Division; Général de Division Eugène-Casimir Villatte, Comte d'Oultremont
 * 94th Regiment of Line Infantry (1st and 2nd battalions)
 * 95th Regiment of Line Infantry (1st and 2nd battalions)
 * 27th Regiment of Light Infantry (1 battalion)

Allied Army

 * Commanding Officer; Lieutenant General Thomas Graham (British)
 * British Forces 
 * 2nd Hussars (King's German Legion) (2 squadrons)
 * Browne's Flank Battalion — Formed from the flank companies (Grenadier and Light Infantry) of the following:
 * 1st Battalion, 9th (East Norfolk) Regiment of Foot
 * 1st Battalion, 28th (North Gloucestershire) Regiment of Foot
 * 2nd Battalion, 82nd Regiment of Foot (Prince of Wales's Volunteers)
 * Barnard's Flank Battalion
 * 2nd Battalion, 47th (Lancashire) Regiment of Foot (flank companies)
 * 20th Portuguese Infantry Regiment (4 coys)
 * 3rd Battalion, 95th Regiment of Foot (Riflemen) (4 coys)
 * 362 men of the Royal Artillery — commanded by Major Alexander Duncan (unknown units)
 * 96 men of the Corps of Royal Sappers and Miners and Staff
 * Dilke's Brigade; Brigadier General William Thomas Dilke
 * 2nd Battalion, 1st Regiment of Foot Guards
 * 2nd Battalion, Coldstream Regiment of Foot Guards (2 coys)
 * 2nd Battalion, 3rd Regiment of Foot Guards (3 coys)
 * 2nd Battalion, 95th Regiment of Foot (Riflemen) (2 coys)
 * Wheatley's Brigade; Brigadier General Henry Wheatley
 * 1st Battalion, 28th (North Gloucestershire) Regiment of Foot (8 coys)
 * 2nd Battalion, 67th (South Hampshire) Regiment of Foot
 * 2nd Battalion, 87th (The Prince of Wales's Own Irish) Regiment of Foot
 * Spanish Forces; Teniente General Manuel Lapeña Rodríguez y Ruiz de Sotillo
 * 14 guns from the Real Cuerpo de Artillería
 * four squadrons of cavalry
 * 1st Division; General de División Manuel de Lardizábal y Uribe
 * Campomayor Infantry Regiment (2 battalions)
 * Carmona Infantry Regiment (2 battalions)
 * Murcia Infantry Regiment (2 battalions)
 * Canaris Infantry Regiment (1 battalion)
 * 2nd Division; General de División Pedro de Alcántara Téllez-Girón, Príncipe de Anglona
 * African Infantry Regiment (2 battalions)
 * Siguenza Infantry Regiment (2 battalions)
 * Cantabrian Infantry Regiment (2 battalions)
 * Volunteers of Valencia (1 battalion)