▁the ▁south , ▁Han ne ken ' s ▁batt alion ▁was ▁placed ▁on ▁a ▁r idge ▁facing ▁south ▁which ▁formed ▁a ▁continuous ▁extension ▁of ▁the ▁in land ▁fl ank ▁of ▁the ▁Marine ' s ▁horses ho e - sh aped ▁Mat an ik au ▁def enses . ▁A ▁gap , ▁however , ▁still ▁remained ▁between ▁Han ne ken ' s ▁left ▁( east ) ▁fl ank ▁and ▁the ▁main ▁per imeter . ▁ ▁Mar uy ama ' s ▁first ▁attacks ▁on ▁the ▁per imeter ▁With ▁the ▁re deploy ment ▁of ▁Han ne ken ' s ▁batt alion , ▁the ▁ 7 0 0 ▁troops ▁of ▁ 1 st ▁Battalion , ▁ 7 th ▁Mar ines ▁under ▁Lieutenant ▁Colonel ▁Ch esty ▁P ull er ▁were ▁left ▁alone ▁to ▁hold ▁the ▁entire ▁ ▁line ▁on ▁the ▁southern ▁face ▁of ▁the ▁L ung a ▁per imeter ▁east ▁of ▁the ▁L ung a ▁River . ▁Late ▁on ▁ 2 4 ▁October , ▁Marine ▁pat rol s ▁detected ▁Mar uy ama ' s ▁approaching ▁forces , ▁but ▁it ▁was ▁now ▁too ▁late ▁in ▁the ▁day ▁for ▁the ▁Mar ines ▁to ▁rear range ▁their ▁dispos itions . ▁ ▁At ▁ 1 4 : 0 0 ▁on ▁ 2 4 ▁October , ▁Mar uy ama ' s ▁left ▁and ▁right ▁wing ▁units ▁began ▁to ▁deploy ▁for ▁their ▁attacks . ▁Mar uy ama ' s ▁troops ▁had ▁very ▁little ▁art illery ▁or ▁mort ar ▁support ▁for ▁their ▁up coming ▁assault , ▁having ▁abandoned ▁most ▁of ▁their ▁heavy ▁can n ons ▁along