The Gothic War between the Eastern Roman Empire during the reign of Emperor Justinian I and the Ostrogothic Kingdom of Italy took place from 535 to 554 in the Italian peninsula, Dalmatia, Sardinia, Sicily, and Corsica. It was one of the last of the many Gothic wars against the Byzantine Empire. The war had its roots in Justinian's ambition to recover the provinces of the former Western Roman Empire, which had been lost to invading barbarian tribes during the Migration Period.