▁believed ▁that ▁the ▁Americans ▁had ▁viol ated ▁the ▁rules ▁of ▁war ▁by ▁capt uring ▁and ▁killing ▁Mang as ▁Color adas ▁during ▁a ▁par ley ▁session . ▁C och ise ▁and ▁the ▁Apache ▁continued ▁their ▁ra ids ▁against ▁U . S . ▁and ▁Mexican ▁settlement s ▁and ▁military ▁positions ▁throughout ▁the ▁ 1 8 6 0 s . ▁ ▁Capt ure , ▁escape ▁and ▁ret irement ▁ ▁Following ▁various ▁sk irm ishes , ▁C och ise ▁and ▁his ▁men ▁were ▁gradually ▁driven ▁into ▁Arizona ' s ▁Drag oon ▁Mountains , ▁but ▁used ▁the ▁mountains ▁for ▁cover ▁and ▁as ▁a ▁base ▁from ▁which ▁to ▁continue ▁attacks ▁against ▁white ▁settlement s . ▁C och ise ▁ev aded ▁capture ▁and ▁continued ▁his ▁ra ids ▁against ▁white ▁settlement s ▁and ▁travel ers ▁until ▁ 1 8 7 2 . ▁In ▁ 1 8 7 1 , ▁General ▁Oliver ▁O . ▁Howard ▁was ▁ordered ▁to ▁find ▁C och ise , ▁and ▁in ▁ 1 8 7 2 , ▁Howard ▁was ▁accompanied ▁by ▁his ▁a ide ▁ 1 st ▁L t ▁Joseph ▁Al ton ▁S lad en ▁and ▁Captain ▁Samuel ▁S . ▁Sum ner , ▁and ▁they ▁came ▁to ▁Arizona ▁to ▁negoti ate ▁a ▁peace ▁treat y ▁with ▁C och ise . ▁Tom ▁Jeff ords , ▁the ▁Apache ▁leader ' s ▁only ▁white ▁friend , ▁was ▁also ▁present ▁and ▁a ▁treat y ▁was ▁successfully ▁negoti ated ▁on ▁October ▁ 1 2 , ▁ 1 8 7 2 . ▁Based ▁on ▁statements ▁by ▁Sum ner ▁and ▁descri ptions ▁by ▁S lad