Gaithersburg:7 p.m. today. At the Hilton hotel, the dinner meeting of the Montgomery County Civil War Round Table with Mary Ann Jung speaking on Clara Barton. Reservations required. Fee charged. 301-681-6497.
Sharpsburg, Md.: tomorrow through Monday. At Antietam National Battlefield, the anniversary of the Sept. 17, 1862, battle, with four days of free events, including a commemoration ceremony at the Dunker Church, a talk by National Park Service chief historian emeritus Ed Bearss on Gen. Robert E. Lee at Sharpsburg, a ranger-led car tour of the battlefield, artillery demonstrations and walking tours. Free. 301-432-5124 or http:/
Glen Echo:7-9 p.m. Saturday. At the Clara Barton National Historic Site, an evening open house and art show opening at the Barton art gallery. Free. 301-320-1410.
Winchester, Va.:9 a.m.-4:30 p.m. Sept. 29; register by Sept. 26. At the Godfrey Miller House, a symposium on "the burning" of the Shenandoah Valley, when the troops of Union Gen. Philip H. Sheridan destroyed farms and mills, fields and livestock to starve the Confederacy into surrender; sponsored by the Shenandoah Valley Battlefields Foundation. Fee charged. 888-689-4545.
Herndon:2-5 p.m. Sept. 30. At Merrybrook, the former home of Confederate spy Laura Ratcliffe, the dedication of its National Historic Register plaque awarded this year and a fundraiser to help preserve the last antebellum home on Centreville Road. Includes tours, live music and a silent auction of a John Paul Strain print and other items. Reservations suggested. Free. 703-728-5882 or 703-904-8696.
Oakton:7 p.m. Oct. 5. At the Unity of Fairfax Church, a showing of the film "Danger Between the Lines," about life along Hunter Mill Road during the Civil War when troops from both sides marched along the road and camped in the area. Produced by the Hunter Mill Defense League. Free. 703-281-1767.
Fort Washington, Md.:6:30-8:30 p.m. Oct. 6 and noon-3 p.m. Oct. 7. At Fort Washington Park, a Civil War weekend with reenactors leading lantern tours Oct. 6 and artillery demonstrations Oct. 7; sponsored by the 1st U.S. Artillery, Co. D reenactors and the National Park Service. Park fee charged. 301-763-4600.
Washington:6 p.m. Oct. 9; reservations by Oct. 3. At Fort McNair Officers Club, monthly dinner meeting of the Civil War Round Table of D.C. with Jack Hurst speaking on his book "Men of Fire: Grant, Forrest and the Campaign That Decided the Civil War." Fee charged. 703-578-1942.