The men of the Second Cavalry went to Texas to fight Indians. Then they returned east to fight each other. The creation of the Second Cavalry in 1855 was a watershed event in the history of the United States Army. Ordered to engage the Native American tribes whose persistent raids were slowing the settlement of the West, the officers of the Second were unwittingly preparing to fight each other. Established by Secretary of War Jefferson Davis, the Second and its officers were assigned-disregarding Army tradition-on the basis of merit and not seniority.