"Attacker" set sail on 14 September 1944, to participate in Operation Outing I, an operation designed to delay German troop movements in the Dodecanese Islands. She arrived 15 September, and relieved "Hunter". She returned to Alexandria, on 20 September, to resupply, and returned to the Dodecanese Islands, on 27 September, for Operation Outing II. She again returned to Alexandria, 5 October, for further refuel and rearm. "Hunter" was again relieved by "Attacker" in the eastern Aegean Sea, on 11 October, for Operation Manna. Returning 30 October, to Alexandria.