Blackburn relinquished his role as city coroner in 1947 , and was appointed as a conciliation commissioner of the Commonwealth Court of Conciliation and Arbitration , a position he held until 1955 . He was also chairman of trustees for the Services Canteen Trust Fund from 1947 until his death . On 8 June 1949 , Blackburn was appointed as the honorary colonel of the Adelaide University Regiment ( AUR ) , and he was transferred to the Retired List in January 1950 with the honorary rank of brigadier . In the same year he relinquished his role as state president of RSSAILA . In 1953 , he was awarded the Queen Elizabeth II Coronation Medal . He relinquished his honorary colonel role with AUR in January 1955 . In 1955 , he was appointed as a member of the Australian National Airlines Commission and a director of Trans Australia Airlines . For his " exceptionally fine honorary service as chairman of several trusts , especially for the benefit of ex-servicemen and their dependants " , he was appointed a Companion of the Order of St Michael and St George in the 1955 New Year Honours . The following year , Blackburn attended the VC centenary gathering in London
Queen Elizabeth II Coronation Medal
Queen Elizabeth II Coronation Medal
Arthur Blackburn