"When He broke the seal, I heard the living creature saying, “Come.” And a red horse went out; and to him who sat on it, it was granted to take peace from the earth, and that men would slay one another; and a great sword was given to him."

The First Horseman of the Apocalypse. War, bearing a red sword with which to lead the charges and slaughter his enemies.

My own little Incarnation of War. In my mythology, War comes first.
Represented here as an Unicorn, because I didn't want to be totally unoriginal. He also wears a white cloth to represent Conquest as well.