GENERAL ORDERS, No. 5. WAR DEPARTMENT, Adjutant General’s Office, Washington, January 5, 1863. By direction of the President, the troops in the Department of the Gulf will constitute the Nineteenth Army Corps, to date from Decem- ber 14, 1862, and Major General N. P. Banks is assigned to the command. By order of the Secretary of War: E. D. TOWNSEND, Assistant Adjutant General.