Kammala jumla mai zuwa: Unwin ya kasance a cikin RAF bayan yakin kuma ya canza zuwa Bristol Brigand jirgin sama a 1948. Ya tashi wannan nau'in a lokacin
Ya shahara a yakin Malaya a shekarar 1952 kuma an ba shi lambar yabo ta musamman don kokarinsa. Ya yi ritaya daga RAF a shekarar 1961 a matsayin kwamandan kwando.