orn , ▁Leg olas ▁and ▁G im li ▁are ▁able ▁to ▁fight ▁them ▁off . ▁ ▁The ▁game ▁then ▁returns ▁to ▁the ▁opening , ▁with ▁Arag orn ▁and ▁É ow yn ▁on ▁the ▁batt lement s . ▁The ▁women ▁and ▁children ▁are ▁taken ▁into ▁the ▁c aves , ▁as ▁Sar uman ' s ▁army ▁arriv es , ▁and ▁the ▁Battle ▁of ▁the ▁Horn burg ▁begins . ▁Initial ly , ▁the ▁def enders ▁are ▁able ▁to ▁hold ▁off ▁the ▁attack ers , ▁but ▁the ▁U ru k - hai ▁bl ast ▁a ▁hole ▁in ▁the ▁outer ▁wall ▁using ▁explos ives , ▁through ▁which ▁hundreds ▁of ▁U ru k - hai ▁and ▁or cs ▁flo od . ▁After ▁the ▁women ▁and ▁children ▁retre at ▁deeper ▁inside , ▁the ▁def enders ▁move ▁to ▁the ▁cour ty ard ▁to ▁attempt ▁to ▁defend ▁the ▁door ▁to ▁the ▁Great ▁Hall . ▁After ▁a ▁length y ▁battle , ▁the ▁she er ▁numbers ▁of ▁attack ers ▁prove ▁too ▁much , ▁and ▁everyone ▁retre ats ▁inside . ▁Ar arg orn , ▁Leg olas , ▁G im li , ▁Thé oden ▁and ▁the ▁remainder ▁of ▁the ▁R oh an ▁war riors ▁prepare ▁to ▁make ▁a ▁suic ide ▁charge ▁out ▁of ▁the ▁Hall , ▁but ▁as ▁they ▁do , ▁Gand alf ▁arriv es ▁with ▁a ▁vast ▁army ▁of ▁R oh ir rim , ▁attack ing ▁the ▁U ru k - hai ▁and ▁or cs ▁from ▁behind ▁whilst ▁the ▁others ▁attack ▁from ▁the ▁front . ▁Sar uman ' s ▁army ▁is ▁dec im ated .