▁sent ▁over se as ▁to ▁Marine ▁Corps ▁Air ▁Station ▁E wa , ▁Hawai i ▁in ▁January ▁ 1 9 4 1 . ▁ ▁There ▁they ▁cons olid ated ▁with ▁the ▁headquarters ▁of ▁the ▁ 2 nd ▁Marine ▁A ircraft ▁Wing ▁July ▁ 1 0 , ▁ 1 9 4 1 ▁and ▁less ▁than ▁a ▁month ▁later ▁they ▁were ▁red es ign ated ▁Marine ▁A ircraft ▁Group ▁ 2 1 . ▁ ▁World ▁War ▁II ▁M AG - 2 1 ▁suffered ▁ 1 7 ▁cas ual ties ▁and ▁all ▁ 2 1 ▁of ▁their ▁aircraft ▁were ▁destroyed ▁during ▁the ▁December ▁ 7 , ▁ 1 9 4 1 ▁attack ▁on ▁Pear l ▁Har bor . ▁ ▁Squad rons ▁from ▁M AG - 2 1 ▁fought ▁at ▁the ▁Battle ▁of ▁W ake ▁Island , ▁Battle ▁of ▁Mid way ▁and ▁as ▁part ▁of ▁the ▁C act us ▁Air ▁Force ▁during ▁the ▁Battle ▁of ▁Gu adal can al ▁but ▁the ▁group ▁itself ▁remained ▁at ▁MC AS ▁E wa ▁until ▁February ▁ 1 9 4 3 ▁when ▁they ▁depart ed ▁for ▁Ban ika ▁in ▁the ▁Russell ▁Islands . ▁ ▁By ▁June ▁ 1 9 4 3 , ▁M AG - 2 1 ' s ▁squad rons ▁were ▁fighting ▁large ▁scale ▁operations ▁against ▁Japanese ▁install ations ▁in ▁the ▁northern ▁Sol omon ▁Islands . ▁ ▁The ▁group ▁moved ▁to ▁E f ate ▁in ▁November ▁ 1 9 4 3 ▁and ▁remained ▁there ▁until ▁June ▁ 1 9 4 4 . ▁ ▁Their ▁final ▁destination ▁during ▁the ▁war ▁was ▁on ▁Gu