Battle of Medina de Rioseco
1808 CE.
Shown on the map at 41.894°, -4.994°.
The Battle of Medina de Rioseco, also known as the Battle of Moclín, was fought during the Peninsular War on 14 July 1808 when a combined body of Spanish militia and regulars moved to rupture the French line of communications to Madrid. General Joaquín Blake's Army of Galicia, under joint command with General Gregorio de la Cuesta, was routed by Marshal Bessières after a badly coordinated but stubborn fight against the French corps north of Valladolid. Bessières exploited the poor coordination between Blake and Cuesta to defeat the Spaniards in detail, with Blake being ejected from a low ridge while Cuesta sat to the rear, and Cuesta failing to recapture the ridge with his own troops.
Text from the Wikipedia article Battle of Medina de Rioseco, licensed CC BY-SA 4.0.