Spanish Army (Peninsular War)

The Spanish Army of the Peninsular War refers to the Spanish military units that fought against France's Grande Armée from 2 May 1808 to 17 April 1814) a period which coincided with what is also termed the Spanish War of Independence ("Guerra de la Independencia Española").
These regular troops were supplemented throughout the country by the guerrilla actions of local militias which, in the case of Catalonia, ran to thousands of well-organised "miquelets", or "somatenes", who had already proved their worth in the Catalan revolt of 1640 and in the War of the Spanish Succession (1701–1714), while in Andalusia, they were more modest in number, and sometimes little more than brigands who were, in some cases, feared by French troops and the civilian population alike but which were nevertheless a constant source of harassment to the French army and its lines of communication, as were the numerous spontaneous popular uprisings. So much so, that by summer 1811, French commanders deployed 70,000 troops only to keep said lines open between Madrid and the border with France. A list drawn up in 1812 puts the figure of such irregular troops at 38,520 men, divided into 22 guerrilla bands.
At some battles, such as the Battle of Salamanca, the Army of Spain fought side-by-side with their allies of the Anglo-Portuguese Army, led by General Wellesley (who would not become the Duke of Wellington until after the Penininsular War was over).
Background.
Under the terms of the Treaty of Fontainebleau, which divided the Kingdom of Portugal and all Portuguese dominions between France and Spain, Spain agreed to augment, by three Spanish columns (numbering 25,500 men), the 28,000 troops Junot was already leading through Spain to invade Portugal. Crossing into Spain on 12 October 1807, Junot started a difficult march through the country, finally entering Portugal on 19 November.
The three columns were as follows:
Irregular troops.
Following on from other related decrees, on 17 April 1809, the Junta Central issued orders for all able-bodied patriots to join the Corso Terrestre (literally, "Land Corsairs"). By the following August, the Corso Terrestre of Navarra, initially comprising fifteen men, led by Francisco Xavier Mina, had carried out a series of successful ambushes, and soon consisted of 1,200 infantry troops and 150 cavalry, now known as the Primero de Voluntarios de Navarra ("First Volunteers of Navarra"). By November 1811, Juan Palarea Blanes, known as "El Médico", based in La Mancha, had raised both the Husares Francos Numantinos, a light cavalry unit, and the Cazadores Francos Numantinos, a light infantry unit, both of which were incorporated into the 4th Army in 1813, with the cavalry unit later joining Espoz y Mina's division in Navarre.
May – November 1808.
The jubilation following General Castaños' mid-July victory at Bailén was short-lived, and General Merlin's sacking of Bilbao, on 16 August 1808, caused much popular discontent throughout the country, which was aimed specifically at the Juntas and the generals.
On 5 September, a war council was convened, attended by General Cuesta; Castaños; Llamas; la Peña; the Duque del Infantado, representing General Blake; and another officer (unknown) representing Palafox. Cuesta, as the senior general, attempted to persuade Castaños to join him in leading a military government separated from the Juntas, but Castaños refused. Then, having tried, to no avail, to persuade his colleagues to name him commander in chief, Cuesta stormed out of the meeting. Having taken matters into his own hands, he would later be arrested and relieved of his command, only to have it restored shortly afterwards.
On 10 November, the Junta Central published its manifesto, dated 28 October 1808, in which, among other declarations, it declared its intention of maintaining a force of 500,000 troops, together with 50,000 cavalry.
According to the manifesto, the existing diverse regiments and corps of the Spanish Army would be organised into four large corps, presided over by a Junta Central de Guerra (Central War Board), to be headed by Castaños, as follows:
Autumn Campaign (1809).
The Junta Central's Autumn Campaign was politically motivated, and despite Del Parque's victory at Tamames in October, the Spanish Army's subsequent defeats at the battles of Ocaña and Alba de Tormes led to the Junta's fall at the beginning of 1810.
The campaign was to be carried out by the Army of Estremadura, under the Duke of Alburquerque's much depleted force of 8,000 infantry and 1,500 cavalry, as he had had to transfer three divisions of infantry and twelve regiments of cavalry to reinforce the Army of La Mancha, under Venegas, and which, after its defeat at Almonacid, had been reduced to only 25,000 men.
The Army of La Mancha now comprising some 50,000 men, the Junta removed Venegas (who had taken over from Cartaojal, sacked for his incompetence at the Battle of Ciudad Real in March) replacing him with Aréizaga, who was able to bring the force up to 48,000 infantry, 6,000 cavalry and 60 cannon, making it one of the largest forces Spain had ever created.
The Army of the Left which, in theory, was 50,000 strong (although only 40,000 of them actually took part in the campaign), was formed from La Romana’s Army of Galicia, with Ballasteros’s Army of the Asturias and the Del Parque's troops. The latter was given command of this Army.
1812–1814.
On 22 September 1812, the Cortes named Wellington "generalissimo" (supreme commander) of the Spanish armies. The commander of the 4th Army, General Ballesteros, was arrested and relieved of his command in October 1812, and exiled for protesting Wellington's command and trying to instigate an uprising. By mid-1813, Spain's regular forces consisted of some 160,000 troops, around a third of which were fighting alongside Wellington's Anglo-Portuguese Army.