▁returned ▁to ▁Port - au - Pr ince , ▁H ait i ▁as ▁the ▁Officer - in - Char ge ▁Naval ▁Radio ▁Station ▁and ▁Sign al ▁Officer ▁of ▁the ▁Brigade ▁Sign al ▁Company , ▁ 1 st ▁Brigade , ▁a ▁duty ▁he ▁retained ▁until ▁May ▁ 1 9 3 1 . ▁ ▁After ▁serving ▁several ▁months ▁at ▁the ▁Marine ▁Corps ▁Head quarters ▁in ▁Washington , ▁D . C . ▁and ▁at ▁the ▁Army ▁Qu arter master ▁Sub s istence ▁School ▁in ▁Chicago , ▁Illinois , ▁Gro ff ▁was ▁assigned ▁as ▁the ▁post ▁communic ations ▁officer , ▁ 1 st ▁Sign al ▁Company , ▁Marine ▁Bar ra cks , ▁at ▁Quant ico , ▁Virginia ▁in ▁October ▁ 1 9 3 2 . ▁ ▁He ▁served ▁in ▁that ▁capacity ▁until ▁August ▁ 1 9 3 6 . ▁ ▁In ▁July ▁ 1 9 3 7 , ▁Gro ff , ▁then ▁a ▁major , ▁was ▁transferred ▁to ▁Head quarters ▁Company , ▁Fle et ▁Marine ▁Force , ▁Marine ▁Bar ra cks , ▁San ▁Diego , ▁California , ▁where ▁he ▁served ▁as ▁the ▁fleet ▁communication ▁officer ▁until ▁May ▁ 1 9 3 9 . ▁ ▁World ▁War ▁II ▁ ▁Despite ▁request ing ▁over se as ▁duty , ▁Gro ff ▁remained ▁in ▁the ▁United ▁States ▁for ▁the ▁duration ▁of ▁World ▁War ▁II . ▁ ▁In ▁June ▁ 1 9 3 9 , ▁he ▁took ▁command ▁of ▁the ▁Marine ▁Corps ▁Rec ruit ▁Dep ot ▁in ▁San ▁Diego , ▁California . ▁ ▁Add itional ▁duties ▁included ▁being ▁the ▁Officer - in