High Quality Content by WIKIPEDIA articles! Leslie Douglas (Les) Jackson DFC Bar (24 February 1917 – 17 February 1980) was an Australian fighter ace of World War II, credited with five aerial victories. Born in Brisbane, he was a businessman when he joined the Royal Australian Air Force Reserve in 1937. Called up for active duty shortly after the outbreak of war in September 1939, he served with No. 23 Squadron in Australia before posting to the South West Pacific theatre with No. 21 Squadron in Singapore. In March 1942 he joined No. 75 Squadron in Port Moresby, New Guinea, flying P-40 Kittyhawks under the command of his eldest brother, John. During the ensuing Battle of Port Moresby, Les shot down four Japanese aircraft.