, ▁they ▁would ▁be ▁able ▁to ▁over throw ▁the ▁US ▁back ed ▁dict ator ▁Rafael ▁Tru j illo . ▁The ▁prepar ations ▁of ▁the ▁force ▁were ▁not ▁kept ▁very ▁secret , ▁and ▁its ▁intent ▁was ▁very ▁public . ▁In ▁September ▁ 1 9 4 7 , ▁the ▁United ▁States ▁government ▁press ured ▁Ram ón ▁Gra u ▁into ▁arrest ing ▁the ▁entire ▁force , ▁and ▁the ▁invasion ▁never ▁took ▁place . ▁The ▁weapons ▁of ▁the ▁forces ▁were ▁also ▁conf isc ated . ▁The ▁ex iles ▁were ▁set ▁free ▁within ▁a ▁few ▁days . ▁The ▁incident ▁was ▁given ▁the ▁name ▁" C ay o ▁Conf ites ▁affair ," ▁after ▁the ▁area ▁in ▁Cuba ▁from ▁where ▁the ▁invasion ▁was ▁supposed ▁to ▁be ▁launched . ▁ ▁P act o ▁del ▁Car ibe ▁ ▁After ▁the ▁collapse ▁of ▁the ▁Domin ican ▁invasion ▁attempt , ▁the ▁Gu atem al an ▁government ▁of ▁Juan ▁José ▁Ar é val o ▁became ▁the ▁leg ion ' s ▁biggest ▁supp orter . ▁Ar é val o ▁had ▁previously ▁proc ured ▁weapons ▁for ▁the ▁ex iles ▁by ▁claim ing ▁that ▁his ▁purch ases ▁were ▁for ▁the ▁Gu atem al an ▁military . ▁He ▁convinced ▁Ram ón ▁Gra u ▁to ▁release ▁the ▁ex iles ▁weapons ▁to ▁the ▁Gu atem al an ▁government . ▁The ▁ex iles ▁began ▁to ▁con greg ate ▁in ▁Gu atem ala . ▁In ▁December ▁ 1 9 4 7 ▁Ar é val o ▁convinced ▁them ▁to ▁sign ▁the ▁P act o ▁del ▁Car ibe ▁( Car ib bean ▁P act ),