▁ 2 2 ▁July ▁ 1 8 4 1 , ▁he ▁sent ▁Colonel ▁A cha ▁with ▁the ▁Un itar ian ▁v angu ard ▁towards ▁San ▁Juan . ▁ ▁A cha ▁broke ▁through ▁the ▁troops ▁sent ▁against ▁him ▁by ▁O y uela ▁and ▁occupied ▁the ▁city ▁of ▁San ▁Juan ▁on ▁ 1 3 ▁August ▁ 1 8 4 1 . ▁ ▁Three ▁days ▁later ▁a ▁combined ▁force ▁of ▁Federal ▁troops ▁from ▁C uy o ▁under ▁General ▁José ▁F éli x ▁Ald ao ▁supported ▁by ▁Ben av í de z ▁cl ashed ▁in ▁an ▁all - day ▁struggle ▁with ▁A cha ’ s ▁much ▁smaller ▁force ▁in ▁the ▁Battle ▁of ▁Ang aco . ▁ ▁Despite ▁being ▁greatly ▁out number ed , ▁A cha ▁was ▁vict orious . ▁ ▁Ben av í de z ▁retired ▁from ▁the ▁field ▁of ▁battle . ▁ ▁On ▁the ▁road ▁near ▁C añ ada ▁H onda ▁he ▁met ▁Colonel ▁José ▁Santos ▁Ram í rez ▁bringing ▁ 5 0 0 ▁rein for c ements ▁to ▁Ald ao ▁from ▁M endo za . ▁ ▁This ▁gave ▁Ben av í de z ▁a ▁force ▁of ▁ 8 0 0 , ▁and ▁he ▁decided ▁to ▁attack ▁A cha ▁again . ▁ ▁On ▁ 1 9 ▁August ▁ 1 8 4 1 ▁he ▁found ▁A cha ▁at ▁Ch ac ar illa , ▁to ▁the ▁south ▁of ▁the ▁city ▁of ▁San ▁Juan . ▁ ▁He ▁dispers ed ▁the ▁caval ry , ▁but ▁A cha ▁returned ▁to ▁the ▁city ▁with ▁his ▁inf antry ▁and ▁established ▁a ▁strong ▁position