Initially serving under Heraclius, the contingent of Armenian troops under his command were instrumental in the Byzantine success against the Sassanids during the Byzantine-Persian Wars that culminated in the overthrow of Khosrau II in 628. He also served as the sparapet (commander in chief) of Byzantine Armenia from about 630 to 638, and during this time may have been responsible for the founding of the Cathedral of Mren.
Initially serving under Heraclius, the Armenian troops in his command played a crucial role in Byzantine victories over the Sassanids during the Byzantine-Persian Wars that ended with Khosrau II's overthrow in 628. He also served as the sparapet (commander-in-chief) of Byzantine Armenia from around 630 to 638, and possibly established the Cathedral of Mren during this period.