The Gothic War between the Byzantine Empire during the reign of Emperor Justinian I and the Ostrogoths (Goths) took place from 535 to 554 in the Italian Peninsula, Dalmatia, Sardinia, Sicily, and Corsica. It was the last of the 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.