sentences:  From October 1849 until the summer of 1850, Horse and Coacoochee led the migration south, picking up a troop of disgruntled Kickapoo Indians along the way, and facing the war arrows of the Comanche who considered Coacoochee's presence in their territory an affront.The Comanche may have known of an agreement Coacoochee had concluded with representatives of the Mexican government to gain land on which to live once in Mexico in exchange for his service on the border repelling Texan and Comanche raiders.After a pitched battle with the Comanche, the fleeing party had to cross a desert region, meeting up with an old adversary, Major John T. Sprague, at the springs of Las Moras just north of the Mexican border.