The Ash of War imparts Lightning affinity to an armament and introduces the skill "Lightning Slash."

This skill involves calling down a bolt of lightning into the armament, then swinging it down to create an explosive shock.

The armament retains the lightning enchantment for a while.

Usable on swords, axes, and hammers.

To obtain these Ashes of War, head in the northwest direction of the battlefield ruins outside the city of the Yatan Plateau.

Eliminate the dung beetles in the camp to acquire the Battle Ashes.