). ▁ ▁During ▁World ▁War ▁I , ▁a ▁standard ▁practice ▁developed ▁for ▁Reg ular ▁Army ▁officers ▁to ▁serve ▁in ▁higher ▁positions ▁within ▁the ▁National ▁Army , ▁and ▁thus ▁hold ▁two ▁ranks ▁- ▁a ▁permanent ▁rank ▁and ▁a ▁temporary ▁rank . ▁ ▁This ▁concept ▁was ▁related ▁to ▁the ▁idea ▁of ▁the ▁bre vet ▁rank , ▁which ▁had ▁generally ▁fallen ▁into ▁dis use ▁by ▁the ▁time ▁of ▁the ▁First ▁World ▁War . ▁The ▁National ▁Army ▁was ▁susp ended ▁after ▁World ▁War ▁I . ▁ ▁World ▁War ▁II ▁In ▁September ▁ 1 9 4 0 , ▁the ▁United ▁States ▁re int rodu ced ▁cons cription ▁in ▁response ▁to ▁the ▁increasing ▁lik elihood ▁of ▁entry ▁into ▁World ▁War ▁II . ▁Person nel ▁volunt arily ▁en list ing ▁into ▁the ▁United ▁States ▁Army ▁could ▁choose ▁to ▁volunt arily ▁en list ▁into ▁the ▁Reg ular ▁Army , ▁National ▁Guard ▁of ▁the ▁United ▁States , ▁or ▁Organ ized ▁Reserve . ▁On ▁ 1 4 ▁May ▁ 1 9 4 0 , ▁legisl ation ▁provided ▁that ▁all ▁volunt ary ▁en list ments ▁in ▁the ▁United ▁States ▁Army ▁during ▁a ▁time ▁of ▁national ▁emer gency ▁or ▁war ▁were ▁to ▁be ▁in ▁the ▁Army ▁of ▁the ▁United ▁States ▁" without ▁specification ▁of ▁any ▁particular ▁component ▁or ▁unit ▁there of ." ▁The ▁" Ar my ▁of ▁the ▁United ▁States " ▁as ▁a ▁service ▁component ▁was ▁formally ▁activ ated ▁in ▁February ▁ 1 9 4 1 . ▁It ▁was ▁leg ally ▁considered ▁the ▁successor ▁to ▁the ▁National ▁Army . ▁ ▁The ▁Army ▁of ▁the ▁United