Organizing the First Tennessee Infantry, Houk served under several different ranks on the side of the Union.<ref name=tennesseeencyclopedia/> He later left the military in 1863 due to poor health, and wrote articles for the press expressing pro-Union statements. | Organizing the First Tennessee Infantry, Houk served under several different ranks on the side of the Union.<ref name=tennesseeencyclopedia/> He later left the military in 1863 due to poor health, and wrote articles for the press expressing pro-Union statements. |