War

 is a mythic horse found in the Undead Nightmare DLC pack for Red Dead Redemption.

Characteristics
War is one of the Four Horses of the Apocalypse, along with Famine, Pestilence, and Death. The player can tame War in the wild.

War possesses a blazing mane, its indiscriminate flames engulfing the undead in its path, transforming them into smoldering ash. War also possesses infinite stamina.

War can be found near Armadillo, above Gaptooth Ridge, above Manteca Falls Below Macfarlane's Ranch, around Fort Mercer, within view of Seth's cabin east of the eastern railway bridge that leads to Mexico or lastly, the field surrounding Coot's Chapel. There is a high possibility that War actually spawns in completely random locations in New Austin.

Location
When exploring the map, a blue marker on the radar will signify if you are close to these or any other mythical creatures. War can be found east and west of Armadillo, North of MacFarlane's Ranch, as well as north of Ridgewood Farm near Hamlin's Passing. War is located between Benedict Point, Tumbleweed and Gaptooth Breach. War can also be found near Warthington Ranch.

Trivia

 * War's flames are not actually strong enough to kill zombies and will go out soon after. A second attack is usually enough to finish them. Also, Undead bulls and Undead Horses seem to be unaffected by War's flames.
 * Despite the fact War's flames are supposed to ignite the undead, the player can still hogtie a zombie and transport it while riding War and the zombie will not catch fire.
 * Somewhat ironically, War gets scared by the flame of the torch when attacked.
 * War's flames do not appear during cutscenes.
 * As the second rider of the four Horsemen of the Apocalypse rides War, the red horse. War's fiery red color, along with the rider's heavy, firey blade, represents the bloodshed of slayed men.