ten years after their consulship, in 147 bc, orestes was sent as part of an ambassadorial mission to arbitrate in a dispute between the achaean league and the lacedaemonians. following the senate's instructions, he removed several important towns from the league, leading to riots at corinth, and an attack on the ambassadors. in response, his former colleague was dispatched at the head of a second delegation with instructions to censure the achaeans and continue negotiating the dispute. sextus' attempt to resolve the dispute was frustrated by the achaean general critolaus. the following year, the league rose against rome, and was decisively defeated in the achaean war. the league was dissolved, and most of mainland greece was incorporated into the roman republic.