In England, Jameson joined the Royal Air Force. He completed his flying training in January 1937 and was posted to No. 46 Squadron RAF. At the outbreak of the Second World War, Jameson was a flight commander with No. 46 Squadron RAF, flying Hurricanes. From April 1940 he took part in the Norwegian Campaign, In the campaign he destroyed a Junkers Ju 88 and had a share in two Dornier Do 26flying boats. In June it was decided to evacuate all Allied forces from Norway. On 7 June No. 46 Squadron landed its Hurricanes successfully on the flight deck of, the first time Hurricanes had landed on a carrier. This was achieved by fixing sandbags under the tailplanes to shorten the landing run. Jameson led the first three aircraft in the attempt, and after making a successful landing he sent a radio signal and the rest of the squadron followed suit. The carrier, along with the escort destroyers and, was intercepted on the way to the United Kingdom by the German battleships and on 8 June. All three ships were eventually sunk by shelling. Jameson and his commanding officer, Squadron Leader "Bing" Cross found themselves on a Carley float with thirty other survivors. After three days drifting in the freezing temperatures only seven men were alive to be picked up by the Norwegian cargo vessel,. The two RAF pilots being the only surviving pilots of their unit. Of some 1,474 men on board the three ships, only 45 survived. For his services in Norway Jameson was awarded the Distinguished Flying Cross in July 1940. His citation read: After recover at Gleneagles Hospital in Scotland, Jameson took command of No. 266 Squadron RAF in September 1940, as part of Douglas Bader's "Big Wing". In June 1941 he was posted in as Wing Leader, Wittering Wing, before becoming acting Station Commander at RAF Wittering in October 1941. He was awarded a Bar to his DFC that same month, the citation reading: In August 1942 he led the Wittering Wing over Dieppe, and in December was posted to RAF North Weald to command Nos. 331 and 332 Squadrons. For his services as a wing leader, Jameson was awarded the Distinguished Service Order on 9 March 1943. The citation read: After a spell on the staff at No. 11 Group Operational planning, in July 1944 he took command of 122 Wing, ending the war an ace with nine destroyed, one probable and another shared, two damaged and two destroyed on water. In September 1945 he was Officer CommandingRAF Schleswigland and was later Officer Commanding of RAF Wunsdorf. Jameson was appointed a Companion of the Order of the Bath in 1959, retired in 1960 and, after being treated for tuberculosis, returned to New Zealand.
