Reinforcements Arrive – The Spanish Retreat Becomes …
Years: 1762 - 1762
June
Reinforcements Arrive – The Spanish Retreat Becomes Inevitable (Summer 1762)
As the Spanish invasion of Portugal faltered, the arrival of reinforcements in Oporto and Trás-os-Montes turned the tide against the Bourbon forces. The newly organized British-Portuguese troops, alongside militias and irregulars, strategically occupied key mountain passes and defiles, effectively cutting off Spanish withdrawal routes and sealing their fate.
The Spanish Retreat Becomes Inevitable
By mid-1762, the Spanish forces, which had once marched unopposed through Trás-os-Montes, now faced multiple obstacles:
- Food shortages due to their own miscalculated supply strategy, compounded by guerrilla harassment from the local population.
- Portuguese militias, Ordenanças, and reinforcements were now blocking their withdrawal routes, making retreat dangerous.
- British and Portuguese regular forces, newly arrived, increased pressure on the demoralized Spanish army.
A Strategic Withdrawal Under Fire
With their supply lines collapsing and their positions becoming untenable, the Spanish began withdrawing from Portuguese territory. However, their retreat was far from orderly:
- Portuguese forces harassed them along the way, inflicting further losses.
- Many Spanish soldiers deserted, choosing to flee rather than continue the disastrous campaign.
- Morale plummeted, as the invaders realized they had lost not to a superior army, but to a weakened Portugal that had outmaneuvered them.
Strategic Consequences of the Spanish Failure
- The Spanish retreat from Trás-os-Montes was the final confirmation that the invasion had failed.
- The Bourbon plan to force Portugal into the Family Compact collapsed, as King Joseph I and the Marquis of Pombal refused to negotiate from a position of weakness.
- Britain had successfully kept Portugal in the war, forcing Spain and France into a humiliating withdrawal.
- By the end of 1762, the Spanish occupation of Portugal was over, marking the end of Spain’s military ambitions in the region.
Conclusion – A Campaign of Blunders and Resistance
The 1762 invasion of Portugal, intended as a swift conquest, ended as a disastrous failure for the Bourbon alliance. Despite Portugal’s initial military weakness, the combination of:
- Portuguese resilience
- Guerrilla warfare
- British military support
- Spanish logistical failures
ensured that the invaders never achieved their objectives. The reinforcements sent to Oporto and Trás-os-Montes, arriving just in time, sealed Spain’s fate, forcing a disorderly retreat that would forever tarnish Spain’s military reputation in the Seven Years’ War.
Locations
People
- Charles III of Spain
- José I of Portugal
- Nicolás de Carvajal, Marquis of Sarria
- Sebastião José de Carvalho e Melo, 1st Marquis of Pombal
- William Pitt
- William, Count of Schaumburg-Lippe
Groups
- Austria, Archduchy of
- Saxony, Electorate of
- Portuguese Empire
- Río de la Plata, Governorate of the
- Brazil, Colonial
- France, (Bourbon) Kingdom of
- Portugal, Bragança Kingdom of
- Spain, Bourbon Kingdom of
- Prussia, Kingdom of
- Britain, Kingdom of Great
- Russian Empire
