. ▁It ▁first ▁appeared ▁in ▁ 1 9 2 2 ▁to ▁design ate ▁" Sp ot ting ▁Squad rons " ▁which ▁provided ▁aer ial ▁naval ▁gun fire ▁spot ting ▁for ▁batt les hips ▁and ▁cru is ers . ▁In ▁ 1 9 2 3 ▁the ▁design ation ▁was ▁changed ▁to ▁" Ob serv ation ▁Pl ane ▁Squadron " ▁or ▁" Ob serv ation ▁Squadron " ▁and ▁continued ▁in ▁use ▁as ▁such ▁until ▁ 1 9 4 5 ▁when ▁the ▁design ation ▁was ▁dis cont in ued . ▁There ▁were ▁two ▁later ▁uses ▁of ▁the ▁V O ▁design ation , ▁from ▁ 1 9 4 7 ▁to ▁ 1 9 4 9 ▁and ▁again ▁during ▁the ▁Vietnam ▁War ▁from ▁ 1 9 6 7 ▁to ▁ 1 9 6 8 . ▁ ▁VS : ▁Dis est ab lished ▁Sc out ing ▁squad rons ▁and ▁VS ▁design ations ▁no ▁longer ▁in ▁use ▁The ▁VS ▁design ation ▁first ▁appeared ▁in ▁ 1 9 2 2 ▁as ▁the ▁design ation ▁for ▁sc out ing ▁squad rons . ▁It ▁was ▁used ▁as ▁the ▁design ation ▁for ▁sc out ing ▁squad ron ▁until ▁it ▁was ▁formally ▁removed ▁from ▁the ▁squad ron ▁design ation ▁system ▁in ▁ 1 9 4 6 , ▁but ▁it ▁had ▁ceased ▁to ▁exist ▁in ▁ 1 9 4 3 ▁as ▁by ▁the ▁end ▁of ▁that ▁year ▁VS ▁squad rons ▁had ▁all ▁been ▁red es ign ated ▁to ▁V F , ▁V T , ▁V C ▁or ▁V CS ▁( c ru iser ▁sc out ing