There is little evidence to suggest the existence of an Aleman duke in the period from c. 610 to c. 630, but Fredegar records that around 631 an Alemannic army under duke Chrodobert participated in Dagobert I's assault on the realm of the Slavs to the east. The Alemannic host ("exercitus Alamannorum") was one of the three columns of the Austrasian army ("exercitus regnum universum Austrasiorum"). While the Alemanni won a battle at an unknown location and the Lombard allies were successful against the Slavs in the Julian Alps, the main army of Austrasian Franks under Dagobert was defeated at the Battle of Wogastisburg.