The French Occupation of Spain – Napoleon…

1808 CE

The French Occupation of Spain – Napoleon Overplays His Hand

Since 1807, French troops had been stationed in Spain under the guise of supporting the invasion of Portugal.
However, in early 1808, Napoleon ordered additional French forces to occupy northern Spain, consolidating his control.
By March 1808, the French had effectively taken control of Spanish cities and fortresses, turning Spain into a French-occupied state.

Napoleon’s Betrayal – The Abdications of Bayonne (May 1808)

A popular uprising in March 1808 forced King Charles IV to abdicate in favor of his son, Ferdinand VII.
Napoleon summoned both Charles IV and Ferdinand VII to Bayonne, where he coerced them into renouncing the Spanish throne.
On May 6, 1808, Napoleon declared his brother, Joseph Bonaparte, King of Spain, placing a French ruler on the Spanish throne.

This outraged the Spanish population, who saw the French occupation as an attack on their sovereignty, monarchy, and Catholic faith.

Spain Erupts in Revolt – The Start of the Peninsular War

The announcement of Joseph Bonaparte’s rule in May 1808 sparked an insurrection that quickly spread throughout Spain and Portugal.
Spanish guerrillas, militias, and remnants of the regular army launched uprisings, harassing the French occupiers.
The Dos de Mayo Uprising (May 2, 1808) in Madrid became a symbol of Spanish resistance, as Napoleon’s troops brutally suppressed the rebellion.
Soon, Spanish forces organized regional juntas, rallying against French rule and forming a national movement of defiance.

Britain Intervenes – Wellesley Lands in Portugal (August 1808)

With Spain and Portugal in open rebellion, Britain saw an opportunity to weaken Napoleon’s forces in Iberia.
In August 1808, Sir Arthur Wellesley (later the Duke of Wellington) landed in Portugal with a small British expeditionary force.
The British aimed to support the Portuguese and Spanish resistance, marking Britain’s full military engagement in the Peninsular War.

Napoleon Responds – The Emperor Marches into Spain (November 1808)

Furious at the unexpectedly fierce resistance, Napoleon decided to intervene personally.
In November 1808, Napoleon led a large French army into Spain, determined to crush the revolt and secure his brother’s throne.
The French quickly retook Madrid and defeated Spanish forces, but the war was far from over.

Conclusion – The Iberian Peninsula Becomes Napoleon’s "Spanish Ulcer"

What Napoleon had intended as a quick occupation became a prolonged and brutal conflict.
The Spanish and Portuguese people refused to submit, engaging in relentless guerrilla warfare against French forces.
The British presence under Wellesley grew, reinforcing Portugal’s resistance and aiding Spanish forces.
The Peninsular War (1808–1814) would become one of Napoleon’s greatest military disasters, draining resources and contributing to his eventual downfall.

What began as a dynastic replacement in Spain soon spiraled into a full-scale national war, turning Iberia into a quagmire for the French army.