▁were ▁supposed ▁to ▁wear ▁green ▁colored ▁co ck ades ▁in ▁their ▁h ats . ▁State ▁Milit ias ▁in ▁the ▁American ▁Revolution ary ▁War ▁period ▁had ▁en sign ▁and ▁sometimes ▁sub altern ▁ranks , ▁with ▁the ▁sub altern ▁rank ▁below ▁the ▁en sign ▁rank ▁where ▁they ▁co ex isted . ▁In ▁ 1 8 0 0 , ▁the ▁United ▁States ▁Army ' s ▁cor net , ▁en sign ▁and ▁sub altern ▁ranks ▁were ▁replaced ▁by ▁second ▁lieutenant . ▁In ▁ 1 8 6 2 , ▁the ▁United ▁States ▁Navy ▁began ▁using ▁the ▁en sign ▁rank , ▁which ▁began ▁using ▁a ▁gold ▁bar ▁as ▁ins ign ia ▁in ▁ 1 9 2 2 . ▁Second ▁lie uten ants ▁received ▁the ▁gold ▁bar ▁ins ign ia ▁in ▁ 1 9 1 7 . ▁When ▁the ▁United ▁States ▁Air ▁Force ▁became ▁a ▁separate ▁military ▁branch ▁from ▁the ▁Army , ▁it ▁kept ▁the ▁Army ' s ▁commission ed ▁officers ▁ranks ▁and ▁ins ign ia . ▁ ▁Women ' s ▁ranks ▁From ▁ 1 9 4 1 ▁to ▁ 1 9 4 9 , ▁the ▁A ux ili ary ▁Territ orial ▁Service ▁( AT S ) ▁of ▁the ▁British ▁Army ▁used ▁the ▁ranks ▁of ▁second ▁sub altern ▁and ▁sub altern , ▁which ▁were ▁equivalent ▁to ▁second ▁lieutenant ▁and ▁lieutenant ▁respectively . ▁From ▁ 1 9 4 9 ▁to ▁ 1 9 5 0 , ▁the ▁A TS ' s ▁successor ▁organization , ▁the ▁Women ' s ▁Royal ▁Army ▁Corps , ▁also ▁used ▁the ▁same ▁ranks ▁until ▁it ▁abandoned ▁them