May the three L-class destroyers escorted the battleship to search for an enemy battleship and cruisers. None were found, but Laforey sank an enemy submarine. Operation Pedestal In August 1942, Lookout was escorting the aircraft carrier when Eagle was torpedoed on 11 August and sunk. Lookout carried out an unsuccessful counterattack with and then helped rescue the 927 survivors. Lookout later transferred 500 of the survivors to . The next day Lookout joined in an attack on an enemy submarine which they had sighted on the surface, but no kill was made. Lookout was then detached with Charybdis, and Lightning to assist the aircraft carrier after she had been hit by dive bombers. Shortly after Operation Pedestal, Lt.Cdr. Cecil Powis Frobisher Brown relinquished command of Lookout and was relieved by Lt.Cdr. Archibald George Forman. He was later promoted to commander while in command of Lookout. During her second patrol after Operation Pedestal, Lookout encountered a merchant ship which was identified as , an Italian vessel of about 4,000 tons. Lookout went to action stations but the vessel was found to have been abandoned and so a skeleton crew was put on board to examine her. Eventually the stokers managed to raise steam on her and Lookout escorted Luarana to Gibraltar. Having spent much of August and most of September 1942 operating out of Gibraltar, Lookout returned home as escort to the battleship , departing from Gibraltar on 30 September and arriving on the Clyde on 5 October before departing the next day for Rosyth where she arrived on 8 October. She then sailed north to Scapa Flow, arriving there on 9 October. Lookout then left Scapa Flow on 23 October for Gibraltar as part escort to battleship , arriving on 29 October at which time she rejoined the 19th Destroyer Flotilla. Operation Retribution In May 1943 Lookout took part in Operation Retribution and sailed from Bone with and the hunts of the 57 Division, departing on 9 May. On their way up the swept channel they were bombed by Ju 88s, but suffered no damage. The next morning the ships sighted the Italian hospital ship Virgiglio and was ordered to escort her to waters of Cape Carthage to examine her. The boarding party later reported that everything was as it should be and the Italian ship was released. On 13 May Lookout sighted a small boat 10 miles north-east of