 The Drava was to the northwest of Sirmium and the Romans from Moesia must have come from the east or the south.Thus, if Caecina Severus did break a siege of Sirmium, he would have pursued the retreating Breuci until they made a last stand.The Dalmatians marched on Salona (in Dalmatia, on the Adriatic coast) but there Bato was defeated and wounded.