...has sailed with the twenty-fifth regiment. The eighth, thirteenth, twenty-eighth, and sixty-ninth regiments, nearly 3,000 strong, embarked yesterday afternoon for Annapolis, on the steamers Marion, Alabama and James Adger. Van Buren, April 24. --The Van Buren Press newspaper, the leading Union newspaper in Western Arkansas, to-day hoisted the Confederate flag over its office. The Uni...