Hephthalite Empire
The Hephthalite–Sasanian War of 484 was a military confrontation that took place in 484 between an invading force of the Sasanian Empire under the command of Peroz I and a smaller army of the Hephthalite Empire under the command of Khushnavaz. The battle was a catastrophic defeat for the Sasanian forces who were almost completely wiped out. Peroz, the Sassanid king, was killed in the action.