Adolius is next mentioned in 542. At the time he was serving as a military officer in the Lazic War, leading his own troop of Armenians. His commanding officer was Belisarius, magister militum per Orientem. In "a display of military strength", Adolius and Diogenes were commanded to cross the Euphrates at the head of 1000 cavalry men. Once reaching the opposite bank of the river, this force started patrolling the area. They were apparently instructed to act as if ready to prevent the forces of Khosrau I from retreating. Procopius narrates: Belisarius ... commanded Diogenes, the guardsman, and Adolius, the son of Acacius, to cross the river with a thousand horsemen and to move about the bank there, always making it appear to the enemy that if they wished to cross the Euphrates and proceed to their own land, they would never permit them to do so."