 Harald fought with the Catepan of Italy, Michael Dokeianos with initial success, but the Normans, led by their former ally William Iron Arm, defeated the Byzantines in the Battle of Olivento in March, and in the Battle of Montemaggiore in May.After the defeat, Harald and the Varangian Guard were called back to Constantinople, following Maniakes' imprisonment by the emperor and the onset of other more pressing issues.Harald and the Varangians were thereafter sent to fight in the southeastern European frontier as the Balkan peninsula in Bulgaria, where they arrived in late 1041.