April 15.—Franklin, St. Mary’s Parish, La., was occupied by the National forces, under General Banks. — The siege of Washington, N. C, was raised. The rebel force, which for nearly three weeks had invested that place, left suddenly this evening. General Foster, who arrived at Newbern yesterday, was preparing an expedition to march for the relief of the town, when the account of the departure of the rebels reached him.—See Supplement.
—At a point seventy miles south of Salt Lake City, Utah, Colonel Evans, with a party of National troops, attacked and put to flight two hundred Indians, thirty of whom were killed. The Union forces followed them fourteen miles, scattering them in every direction. Lieutenant Peck was killed and two sergeants were wounded on the National side.—A battalion of cavalry from California arrived at New-York from San Francisco, under the command of Major De Witt C. Thompson.—Fighting was continued on the Nansemond River, Va., and its vicinity.
—A detachment of two hundred of the Thirty-ninth Kentucky mounted infantry, under the command of Colonel J. Dills, made a forced march on Pikeville, Ky., and after a sharp fight, captured seventeen rebel officers and sixty-one privates, with their horses, arms, and equipments. At the same time, eight scouts from the command of General Julius White, belonging to the Fourteenth Kentucky infantry, captured in Breathitt Co., Ky., a rebel captain and twelve privates.
