Peninsular War: The allies Spain, Portugal and United Kingdom fight an inconclusive battle against the French at the Albuera. It is, in proportion to the numbers involved, the bloodiest battle of the war.

The Peninsular War (1808–1814) was fought in the Iberian Peninsula by the Iberian nations Spain and Portugal, along with the United Kingdom, against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain, it is considered to overlap with the Spanish War of…