 1 Squadron and one by English Electric Canberra jet bombers of No.12 Squadron RAF on 21 February 1956, was considered the most successful of the more than 4,000 missions conducted by the Lincolns, killing at least 14 communist troops.By the time it was withdrawn to Australia in July 1958, the squadron had dropped over 14,000 tonnes of bombs—85 per cent of the total delivered by Commonwealth forces during the Emergency.