ama ▁reached ▁the ▁L ung a ▁River . ▁Bel ieving ▁that ▁his ▁units ▁were ▁about ▁ ▁south ▁of ▁the ▁air field , ▁he ▁ordered ▁the ▁left ▁and ▁right ▁wing ▁units ▁to ▁advance ▁ab re ast ▁of ▁each ▁other ▁parallel ▁to ▁the ▁L ung a ▁north ▁towards ▁the ▁American ▁lines ▁and ▁set ▁the ▁time ▁of ▁the ▁attack ▁for ▁ 1 8 : 0 0 ▁on ▁ 2 2 ▁October . ▁Mar uy ama , ▁however , ▁was ▁mistaken . ▁He ▁and ▁his ▁troops ▁were ▁actually ▁ ▁south ▁of ▁the ▁air field . ▁By ▁the ▁evening ▁of ▁ 2 1 ▁October , ▁it ▁was ▁clear ▁to ▁Mar uy ama ▁that ▁his ▁units ▁would ▁not ▁be ▁in ▁position ▁to ▁attack ▁the ▁next ▁day , ▁so ▁he ▁post pon ed ▁the ▁attack ▁to ▁ 2 3 ▁October ▁and ▁put ▁his ▁men ▁on ▁half ▁r ations ▁to ▁con serve ▁their ▁dw ind ling ▁food ▁supply . ▁At ▁night fall ▁on ▁ 2 2 ▁October , ▁much ▁of ▁the ▁ 2 nd ▁Division ▁still ▁remained ▁str ung ▁out ▁along ▁the ▁Mar uy ama ▁Road , ▁but ▁Mar uy ama ▁ruled ▁out ▁any ▁post pon ement ▁of ▁the ▁attack . ▁ ▁During ▁this ▁time , ▁Sum iy oshi ▁prepared ▁his ▁command ▁to ▁attack ▁the ▁American ▁forces ▁from ▁the ▁west . ▁On ▁ 1 8 ▁October , ▁he ▁began ▁shell ing ▁Hend erson ▁Field ▁with ▁ 1 5 ▁ ▁how itz ers . ▁What ▁remained ▁of ▁the ▁ 4 th ▁Infantry ▁Regiment ▁under ▁Colonel ▁N omas u ▁Nak ag uma ▁began