▁and ▁Tob ago ▁Air ▁Guard . ▁It ▁is ▁also ▁used ▁in ▁the ▁Egypt ian ▁Air ▁Force , ▁H ellen ic ▁Air ▁Force , ▁Royal ▁Air ▁Force ▁of ▁O man ▁and ▁the ▁Royal ▁Th ai ▁Air ▁Force . ▁ ▁The ▁Royal ▁Canadian ▁Air ▁Force ▁used ▁the ▁rank ▁until ▁the ▁un ification ▁of ▁the ▁Canadian ▁Forces ▁in ▁ 1 9 6 8 , ▁when ▁army - type ▁rank ▁titles ▁were ▁adopted . ▁A ▁Canadian ▁group ▁captain ▁then ▁became ▁a ▁colon el . ▁In ▁official ▁French ▁Canadian ▁usage , ▁a ▁group ▁captain ' s ▁rank ▁title ▁was ▁colon el ▁d ' av iation . ▁In ▁the ▁Argent ine ▁Air ▁Force ▁com od oro ▁( com mod ore ) ▁is ▁the ▁rank ▁in ▁Argent ine ▁Spanish ▁while ▁in ▁the ▁Chile an ▁Air ▁Force , ▁the ▁rank ▁ ▁in ▁Chile an ▁Spanish ▁is ▁cor onel ▁de ▁av ia cion ▁or ▁" col onel ▁of ▁av iation ". ▁Until ▁ 1 9 7 3 ▁it ▁was ▁used ▁by ▁the ▁Royal ▁Malays ian ▁Air ▁Force ▁( R MA F ), ▁today ▁the ▁sle e ve ▁ins ign ia ▁is ▁that ▁of ▁a ▁full ▁Colonel . ▁ ▁Equ ivalent ▁ranks ▁in ▁other ▁services ▁In ▁addition ▁to ▁the ▁equival ents ▁used ▁in ▁most ▁air ▁forces , ▁such ▁as ▁Colonel , ▁other ▁air ▁services , ▁especially ▁non - com bat ▁auxili aries ▁in ▁Commonwealth ▁countries , ▁have ▁used ▁a ▁variety ▁of ▁alternative ▁names ▁for ▁equivalent ▁ranks . ▁ ▁The ▁equivalent ▁rank ▁in ▁the ▁Women ' s ▁A ux ili ary ▁Air ▁Force ,