Sergeants D.R. Christianson and W. Irvine, candidates who have completed training at No.1 Parachute Training School, Royal Air Force (R.A.F.), in anticipation of serving with the First Special Service Force. Ringway, England, 12 September 1942.
1923 The Canadian Air Force motto "Sic Itur ad Astra" is replaced by the Royal Air Force motto "Per Ardua ad Astra" ("Through Adversity to the Stars").