Rome Defiant (Guardian of Empire, #3)

Summer 261 AD. The Roman empire lies divided. Threatened on all sides by barbarian invasion and wracked by internal rebellions. The light of civilisation burns low. The forces loyal to emperor Gallienus are overstretched, their morale low as they do what they can to hold the empire together knowing that the final triumph of anarchy is close.

Promoted to prefect of the newly formed cavalry ala, the equites foederati Germanica, Corbulo has little time to prepare his men for action. Trouble is ...