War has been described as the most honorable of the four horseman. He demonstrates this in his sparing of Uriel and his unwillingness to kill the Watcher when Samael urged him, still holding loyalty to the Council at the time. War is normally characterized by a very serious attitude, rarely speaking unless necessary and quick to cut through banter to the heart of the matter. Beneath his stoic exterior, War is quick to anger and can be fearsome whenever someone provokes his wrath. However, among his fellow Horsemen, War seems more relaxed, as he shows during his time with Death. He openly talks and asks questions to his brother, and shows more trust in him than anyone else we've seen him interact with.
War wields a sword called Chaoseater and can mount a Phantom Horse, Ruin. Chaoseater is later replaced by the stronger Armageddon Blade, though War likely still has it in his posession. He also wields several secondary weapons in the Crossblade, Tremor Gauntlet, and Scythe. Once he had recovered its pieces, the Horseman wore the formidable Abyssal Armor. Additionally, War acquires various powers, items and abilities which aid him during his quest. [Source: wikia]
The Horseman War has charged into countless battles astride his spectral steed Ruin, leaving trail of blood and bones in his wake. His eyes and hair are as white as the chill he casts on angels and demons alike, for the fury of his massive sword is unmatched in combat. As unyielding as time itself, War is both honorable and savage. ~ Official Description