 Aulus Caecina Severus, the governor of the neighbouring province of Moesia (in modern Serbia, south of the River Sava and west of the River Danube) quickly advanced against them and defeated them near the River Dravus (Drava), but suffered many casualties.Hoping to renew the struggle soon because many Romans had fallen, the Breuci called on their allies to join them.Cassius Dio did not specify whether Severus broke a siege of the city or prevented the enemy from reaching it.