 Complete the following phrase:  In late 1862 his regiment was sent to Louisiana, and garrisoned at New Orleans and Baton Rouge. Captain Agnus was wounded on 27 May 1863, during the siege of Port Hudson, he was promoted to major on 2 September, and for a time had command of his regiment. He served in Texas, and, after attaining the rank of lieutet-colonel, was ordered eastwards to join the 19th Corps. He served under General Philip Sheridan, taking part in the battles of 