II. On the day after the receipt of this order the troops will be paraded at 10 o'clock a.m. and the order read to them. The national flag will be displayed at half-staff. At dawn of day thirteen guns will be fired, and afterwards at intervals of thirty minutes between rising and setting sun a single gun, and at the close of the day a national salute of thirty-four guns. The officers of the Army will wear crape on the left arm and on their swords and the colors of the several regiments will be put in mourning for the period of six months. By order of the Secretary of War: L. THOMAS, _Adjutant-General_. GENERAL ORDER. NAVY DEPARTMENT, _July 25, 1862_. The death of ex-President Martin Van Buren is announced in the following order of the President of the United States: [For order see preceding page.] In pursuance of the foregoing order, it is hereby directed that thirty minute guns, commencing at noon, be fired on the day after the receipt of this general order at the navy-yards, naval stations, and on board the vessels of the Navy in commission; that their flags be displayed at half-mast for one week, and that crape be worn on the left arm by all officers of the Navy for a period of six months. GIDEON WELLES, _Secretary of the Navy_. WAR DEPARTMENT, _Washington City, D.C., July 31, 1862_. The absence of officers and privates from their duty under various pretexts while receiving pay, at great expense and burden to the Government, makes it necessary that efficient measures be taken to enforce their return to duty or that their places be supplied by those who will not take pay while rendering no service. This evil, moreover, tends greatly to discourage the patriotic impulses of those who would contribute to support the families of faithful soldiers. It is therefore ordered by the President-- I. That on Monday, the 11th day of August, all leaves of absence and furloughs, by whomsoever given, unless by the War Department, are revoked and absolutely annulled, and all officers capable of service are required forthwith to join their respective commands and all privates capable of service to join their regiments, under penalty of a dismissal from the service, or such penalty as a court-martial may award, unless the absence be occasioned by lawful cause. II. The only excuses allowed for the absence of officers or privates after the 11th day of August are: First. The order or leave of the War Department. Second. Disability from wounds received in service. Third. Disability from disease that renders the party unfit for military duty. But any officer or private whose health permits him to visit watering places or places of amusement, or to make social visits or walk about the town, city, or neighborhood in which he may be, will be considered fit for military duty and as evading duty by absence from his command or ranks.