At the end of 1808 Guadamur receives a detachment of French cavalry which was part of Napoleon's troops entered Toledo on December 13. Are installed in the castle, then abandoned but in good use (as the pastor of the town, Juan José de Funes, wrote in 1788). According to documents from 1811, the village contributes towards supplying the infantry and artillery troops quartered in Mazarambroz with daily rations of bread, meat, wine, pulses, salt, oil, coal, wood, barley straw and bran. The resistance of the population has led some young people to integrate into the line of guerrilla of Ambrosio Carmena, "El Pellejero".