▁reb els ▁called ▁" C ac os ". ▁He ▁returned ▁to ▁the ▁States ▁in ▁ 1 9 1 7 ▁and ▁was ▁sent ▁to ▁the ▁Marine ▁Offic ers ' ▁School ▁for ▁Service ▁A float ▁at ▁Nor folk ▁Navy ▁Y ard . ▁Sel den ▁completed ▁the ▁school ▁one ▁year ▁later ▁and ▁was ▁commission ed ▁second ▁lieutenant ▁in ▁July ▁ 1 9 1 8 . ▁He ▁was ▁then ▁attached ▁to ▁the ▁Marine ▁det achment ▁ab o ard ▁the ▁arm ored ▁cru iser ▁USS ▁Hun ting ton ▁and ▁participated ▁in ▁the ▁con voy ▁esc ort ▁duties ▁in ▁the ▁Atlantic ▁Ocean . ▁ ▁Sel den ▁served ▁for ▁a ▁brief ▁period ▁in ▁Florida , ▁before ▁returning ▁to ▁H ait i ▁for ▁a ▁second ▁time ▁in ▁ 1 9 2 2 . ▁He ▁was ▁attached ▁as ▁an ▁instruct or ▁to ▁the ▁Gar de ▁d ' Ha ï ti ▁and ▁later ▁also ▁served ▁as ▁chief ▁of ▁police ▁in ▁Cap - Ha ï t ien ▁until ▁ 1 9 2 5 . ▁He ▁later ▁served ▁with ▁the ▁ 6 th ▁Marine ▁Regiment ▁during ▁the ▁Yang t ze ▁Pat rol ▁in ▁Shang hai ▁from ▁ 1 9 2 7 ▁to ▁ 1 9 2 8 ▁and ▁later ▁with ▁the ▁American ▁Leg ation ▁Guard ▁in ▁P ek ing ▁from ▁ 1 9 3 0 ▁to ▁ 1 9 3 2 . ▁He ▁was ▁promoted ▁to ▁the ▁rank ▁of ▁captain ▁on ▁May ▁ 1 6 , ▁ 1 9 2 9 . ▁ ▁After ▁his ▁return ▁to ▁the ▁United ▁States , ▁Sel den ▁was ▁station