Gatling gun
Approximately 400–600 of the retreating Spanish defenders at El Caney later participated in a hastily organized counterattack against troopers of the U.S. 3rd Cavalry and the 1st Volunteer Cavalry atop Kettle Hill. After closing to within 200 yards of Kettle Hill, they were taken under fire at a range of 600 yards by a single ten-barrel .30 Gatling Gun atop San Juan Hill manned by Sgt. Green of the Gatling Gun Detachment. According to Spanish commanders captured after the battle, all but 40 of the 600 attacking Spanish troops were killed by the Gatling gun fire.