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, Armenian troops were instrumental in Byzantine victories against the Sassanids during the Byzantine-Persian Wars that culminated in Khosrau II's downfall in 628. He also served as sparapet (commander-in-chief) for Byzantine Armenia from around 630 to 638, possibly establishing the Cathedral of Mren.