GENERAL ORDERS, No. 39. WAR DEPARTMENT, Adjutant General’s Office, Washington, February 10, 1863. 1.. Colonel John Vanvalkenburg, 20th Indiana Volunteers, is, by order of the President, dismissed the service of the United States, for disloyalty to the Government, and for conduct unbecoming an officer and a gentleman. 11.. 5urgeons George S. Kemble and Thomas McMartin, U. S. Volun- teers, are, by direction of the President, honorably discharged the service of the United States, on account of ill health. By order of tiie Secretary of War : L. THOMAS, Adjutant General. Official : Assistant Adjutant General.