The Battle of the Sierra Guadalupe (English: Guadalupe Mountains), also known as the Tagus Campaign, was a continuation of the Nationalist Army's race north toward Madrid in the early stages of the Spanish Civil War. In late August 1936, the three Regulares columns of General Yagüe's Army of Africa dashed through the Sierra de Guadalupe Mountains, also known as Sierra de Villuercas, in central Spain and forded across the Tagus River, capturing several towns and routing the Republicans in a succession of rapid advances.