...t the barracks here, who have a battalion drill at six o'clock every morning, and a dress parade every afternoon at five o'clock.--We understand that they are to have a target-firing to-morrow. Col. Corcoran 's New York Regiment of Irish Volunteers, the 69th, over fifteen hundred strong, arrived at Annapolis yesterday, and are stationed on the route between Annapolis and the Junction. The steamers B...