 Complete the following phrase:  Following the secession of several Southern states and the outbreak of hostilities in early 1861, Davidson resigned from his recent commission as a captain in the U.S. Army he had been promoted to that rank on May 13 and was formally dropped from the army for being AWOL on July 30, 1861. Meanwhile, he traveled to the South and entered the service of the Confederate States of America as a captain on March 16, 1861 and as a major in April 1861. He served in the Adjutant Generals office and then on the Inspector Generals staff. He was a staff officer for several leading generals including John B. Floyd, Albert S. Johnston, Simon Bolivar Buckner and William W. Mackall. He was promoted to colonel and was with Brigadier General Mackall among the forces which surrendered following the 