"Blood on the Risers" is an American paratrooper song from World War II. It is associated with all current American airborne units, including the 82nd Airborne Division, the 173rd Airborne Brigade and 4th Brigade Combat Team (Airborne) of the 25th Infantry Division, and the 120th CTS (United States) as well as British airborne units. It is known as "Mancha Roja" (Spanish for "Red Stain") in airborne units from multiple Latin American countries. In Spain it is called "Sangre en las cuerdas" ("Blood upon the risers" in English).