The Battle of Satala was fought in 298 between the forces of the Roman Empire

Roman Empire

The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

 under the Tetrarch

Tetrarchy

The term Tetrarchy describes any system of government where power is divided among four individuals, but usually refers to the tetrarchy instituted by Roman Emperor Diocletian in 293, marking the end of the Crisis of the Third Century and the recovery of the Roman Empire...

 Galerius

Galerius

Galerius , was Roman Emperor from 305 to 311. During his reign he campaigned, aided by Diocletian, against the Sassanid Empire, sacking their capital Ctesiphon in 299. He also campaigned across the Danube against the Carpi, defeating them in 297 and 300...

 and the forces of the Sassanid Persian ruler Narseh

Narseh

Narseh was the seventh Sassanid King of Persia , and son of Shapur I ....

. The battle was a decisive Roman victory. Galerius' forces caught the Persians by surprise and routed them, capturing the Persian camp, including Narseh's family, harem

Harem

Harem refers to the sphere of women in what is usually a polygynous household and their enclosed quarters which are forbidden to men...

 and treasure. The battle was followed by the Treaty of Nisibis, highly advantageous to Rome.