▁a ▁year ▁fighting ▁Ros as ▁in ▁Entre ▁R íos ▁and ▁Cor ri entes , ▁when ▁he ▁had ▁inv aded ▁Buenos ▁Aires ▁Province . ▁But ▁he ▁failed ▁in ▁the ▁invasion , ▁retre ating ▁to ▁C ór dob a ▁Province , ▁where ▁he ▁was ▁defeated ▁at ▁the ▁Battle ▁of ▁Que bra cho ▁Herr ado . ▁ ▁Lav alle ▁joined ▁forces ▁with ▁Greg orio ▁Ar á oz ▁de ▁Lam ad rid , ▁and ▁together ▁they ▁retre ated ▁to ▁T uc um án ▁Province . ▁From ▁there , ▁Lam ad rid ▁march ed ▁towards ▁the ▁C uy o ▁provinces ▁to ▁open ▁a ▁new ▁war ▁front , ▁thinking ▁José ▁F éli x ▁Ald ao ▁only ▁had ▁ 8 0 0 - 1 0 0 0 ▁troops ▁from ▁M endo za ▁at ▁the ▁time , ▁as ▁Lav alle ▁believed . ▁Lav alle ▁resist ed ▁in ▁T uc uman ▁with ▁ 1 , 5 0 0 ▁milit iam en . ▁Yet , ▁at ▁that ▁time ▁rein for c ements ▁under ▁Manuel ▁Ori be ▁began ▁arriv ing ▁adding ▁up ▁to ▁ 9 , 0 0 0 ▁troops , ▁but ▁only ▁ 6 , 0 0 0 ▁ended ▁up ▁part ▁of ▁the ▁final ▁push ▁as ▁the ▁rest ▁remained ▁def ending ▁the ▁C uy o ▁region . ▁ ▁Lam ad rid ' s ▁v angu ard ▁led ▁by ▁Mar iano ▁A cha ▁had ▁ 9 0 0 ▁to ▁ 1 , 0 0 0 ▁soldiers ▁and ▁two ▁can n ons . ▁A cha ▁faced ▁the ▁Federal ist ▁arm ies ▁of ▁José ▁F éli