The Degüello (Spanish: "El toque a degüello") is a bugle call, notable in the US for its use as a march by Mexican Army buglers during the 1836 Siege and Battle of the Alamo to signal that the defenders of the garrison would receive no quarter by the attacking Mexican Army under General Antonio López de Santa Anna. The Degüello was introduced to the Americas by the Spanish armies and was later adopted by the patriot armies fighting against them during the Spanish American wars of independence. It was also widely used by Simon Bolivar's armies, notably during the Battle of Junin and the Battle of Ayacucho.