The Requetés (from the French requêté, “hunting call”) were the Carlist militia during the Spanish Civil War. Wearing red berets, they mostly came from Navarre and were highly religious with many regarding the war as a Crusade. They were often accompanied by priests as field chaplains, who were known for risking their lives to perform the Last Sacrament on the battlefield, and who also urged the men on. A Spanish encyclopedia of 1965 defines the Requetés as a “group of traditionalists whose object is to encourage amongst themselves the goals of the political party, valorous sentiments, physical prowess, initiative, spirit of resistance, and the acceptance of responsibility, and who during the civil wars of Spain, fought in corps (tercios) in defense of the religious and monarchical traditions.”

The earliest use of the term was applied to the Third Battalion of Navarre (Tercer Batallón de Navarra), in 1835, during the First Carlist War, and was later applied generally to all Carlist combatants.