James Callahan entered Texas armed, a quixotic young man enlisted in the Georgia Battalion for the cause of independence. He barely survived the 1836 Battle of Refugio and the Goliad Massacre. Undaunted by the perils of his adopted home, he remained in the line of fire for the next twenty-one years, fighting to protect Texas settlers from Apaches, Comanches, Seminoles, Kickapoos, outlaws, mavericks and the Mexican army. As a Texas Ranger, he rode...