1807–1814 conflict during the Napoleonic Wars
The Peninsular War (1807–1814) was a conflict fought on the Iberian Peninsula during the Napoleonic Wars, primarily between French forces under Napoleon and Spanish and Portuguese resistance, with British support. It was significant because it tied down large numbers of French troops and became one of the most costly campaigns of the Napoleonic Wars, ultimately contributing to Napoleon's weakening position in Europe.
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Belligerents
Spain United Kingdom Portugal
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