 Complete the following phrase:  When the American Civil War began in 1861 Jones volunteered for service in the Union Army. On October 3 he was elected captain of the 53rd Ohio Infantry Regiment, and saw action as such during the Battle of Shiloh and the Siege of Corinth. On May 2, 1862, Jones became colonel of the 53rd Ohio and its commanding officer. He led his regiment during the Siege of Vicksburg and at the 