The Turning Point in the Peninsular War…
May 1811 CE
The Turning Point in the Peninsular War – French Depletion and the Battle of Fuentes de Oñoro (May 3–5, 1811)
By 1811, the Peninsular War had become a war of attrition, with battles and campaigns draining French manpower and resources across Spain and Portugal.
The Depletion of French Forces in Spain
- Napoleon's grand strategy shifted toward Russia, meaning that:
- The French armies in Spain, now numbering over 200,000, were left without reinforcements.
- 30,000 French troops were withdrawn to join the Grande Armée for the invasion of Russia.
- The French were forced onto the defensive, as British, Portuguese, and Spanish forces grew stronger.
With the failure of Masséna’s invasion of Portugal (1810–1811) and the defensive position of the French in Spain, Wellington went on the offensive, targeting key strongholds on the Spanish-Portuguese border.
The Battle of Fuentes de Oñoro (May 3–5, 1811) – A Hard-Fought Allied Victory
- After retreating from Portugal, Masséna concentrated his forces at Salamanca.
- Wellington, pressing the offensive, laid siege to Almeida, a fortified town still held by the French.
- To relieve Almeida, Masséna marched toward Fuentes de Oñoro, where Wellington’s army awaited him.
The Battle (May 3–5, 1811)
- On May 3, Masséna launched a frontal assault, but the British-Portuguese army held firm.
- On May 5, French cavalry and infantry attempted to outflank the Allied position, nearly breaking through.
- However, Wellington’s disciplined counterattacks stabilized the lines, forcing Masséna to retreat.
Aftermath – The French Lose Almeida
- Masséna’s failure at Fuentes de Oñoro forced him to abandon Almeida, further weakening French control of the border region.
- Almeida’s French garrison attempted a breakout but was scattered or captured.
- Napoleon dismissed Masséna from command, replacing him with Marshal Auguste de Marmont, signaling French desperation in the Iberian Peninsula.
Strategic Impact – The Allies Gain Momentum
- The French were increasingly stretched thin, with their ability to hold Spain weakening.
- Wellington’s army was now on the offensive, steadily reclaiming territory and fortresses.
- The Peninsular War had become a drain on Napoleon’s empire, diverting resources needed for the Russian campaign.
Though the war in Spain and Portugal continued, the failure at Fuentes de Oñoro and the loss of Almeida marked a turning point—the French grip on the Iberian Peninsula was slipping, and the Allied counteroffensive was gaining momentum.