Battle of Somosierra

The Battle of Somosierra took place on 30 November 1808, during the Peninsular War, when a combined Franco-Napoleonic Spanish-Polish force under the direct command of Napoleon I forced a passage through a Spanish division stationed at the Sierra de Guadarrama, which shielded Madrid from direct French attack. At the Somosierra mountain pass, 60 miles (97 km) north of Madrid, a heavily outnumbered Spanish detachment of regulars, volunteers and artillery under Benito de San Juan attempted to block Napoleon's advance onto Madrid. Napoleon overwhelmed the Spanish positions in a combined arms attack, sending the Polish Chevau-légers of the Imperial Guard at the Spanish guns while French infantry advanced up the slopes. The victory removed the last obstacle barring the road to Madrid, which fell a few days later.