OPEN NOW

“A NATION ASUNDER” The permanent exhibit features pistols, rifles and imported weapons used by both sides during the Civil War as well as a recreated Federal arms factory that demonstrates how guns used by the Union were made. On view indefinitely. National Firearms Museum, 11250 Waples Mill Rd., Fairfax, Va. 703-267-1600. www.nramuseum.org. Free.

“DIVIDED VOICES, MARYLAND IN THE CIVIL WAR” The exhibition examines Maryland’s role in the Civil War in three acts. Maryland Historical Society, 201 W. Monument St., Baltimore. 410-685-3750. www.mdhs.org. $9, $7 seniors, $6 students, free for age 3 and younger.

“LINCOLN” Wayne Brezinka’s portrait was made using artifacts from the Civil War. Through May 6. Ford’s Theatre, 511 10th St. NW. 202-347-4833. www.fordstheatre.org.

“MATHEW BRADY’S PHOTOGRAPHS OF UNION GENERALS” Studio portraits by one of the most famous photographers of the Civil War are displayed. Through May 31. National Portrait Gallery, Eighth and F streets NW. 202-633-1000. www.npg.si.edu. Free.

“MR. LINCOLN’S WASHINGTON: A CIVIL WAR PORTFOLIO” The exhibition features large-format reproductions of photographs, drawings and maps that document the Civil War and its impact on Washington. Through Jan. 25. National Portrait Gallery, Eighth and F streets NW. 202-633-1000. www.npg.si.edu. Free.

“ONE LIFE: GRANT AND LEE: ‘IT IS WELL THAT WAR IS SO TERRIBLE . . .’ ” The lives of Ulysses S. Grant and Robert E. Lee are explored through paintings, photographs and historic objects. Through May 25. National Portrait Gallery, Eighth and F streets NW. 202-633-1000. www.npg.si.edu. Free.

“THE WAR CAME BY TRAIN” Railroad cars, equipment and artifacts show the role of trains during the Civil War. On view through 2015. B&O Railroad Museum, 901 W. Pratt St., Baltimore. www.borail.org. $16, $14 seniors, $10 ages 2 to 12.

SEPTEMBER

14 THE BATTLE OF ANTIETAM 152ND ANNIVERSARY PROGRAMS Talks, tours, weapons demonstrations and hikes illustrate the battle as it unfolded in 1862. Through Sept. 21. Antietam National Battlefield Visitors Center, 5831 Dunker Church Rd., Sharpsburg, Md. 301-432-7672. www.nps.gov/anti.

14 ANTIETAM CIVIL WAR KAYAK AND BRUNCH TRIP The guided kayaking tour travels on Antietam Creek and passes Civil War landmarks including the Burnside Bridge. Sept. 14 at 11:30 a.m. Newcomer House, 18422 Shepherdstown Pike, Keedysville, Md. www.rivertrail.com/kayak-antietam-creek-brunch.php. $110.

14 THUNDER IN THE VALLEY Encampments, period music, skirmishes and speakers illuminate McClausland’s Resistance and Hunter’s 1864 Virginia Raid. Through Sept. 14. Virginia Horse Center, 487 Maury River Rd., Lexington, Va. bit.ly/1lvunvT. $10, children free.

16 THE BATTLE OF CEDAR CREEK: CROSSROADS IN THE FIGHT FOR THE SHENANDOAH VALLEY Former National Portrait Gallery writer Warren Perry lectures about the campaign and related items in the Smithsonian’s collection. Sept. 16 at 6:45 p.m. S. Dillon Ripley Center, 1100 Jefferson Dr. SW. www.smithsonianassociates.org. $25.

18 “THE PRESIDENTS’ WAR: SIX AMERICAN PRESIDENTS AND THE CIVIL WAR THAT DIVIDED THEM” Author Chris DeRose discusses his latest book. Presented by the Lincoln Group of the District of Columbia. Sept. 18 at 5:30 p.m. in the Willoughby Building, Alfio’s La Trattoria Restaurant, 4515 Willard Ave., Chevy Chase, Md. www.lincolngroup.org. $35 dinner and lecture, $15 lecture only.

19 “WHIRLING THROUGH WINCHESTER”: THE 150TH ANNIVERSARY OF THIRD WINCHESTER Shenandoah Valley Battlefields Foundation commemorates the battle with a weekend of tours, living history programs, cavalry demonstrations, artillery demonstrations and lectures. Sept. 19-20. Various locations around Winchester, Va. www.shenandoahatwar.org.

19 THE BATTLE OF ANTIETAM ALL-DAY TOUR Historians Ed Bearss and Gregg Clemmer lead the bus tour that includes stops in and around Antietam. Sept. 19 from 8 a.m. to 7:15 p.m. Renaissance Mayflower Hotel, 1127 Connecticut Ave. NW. www.smithsonianassociates.org.

20 CIVIL WAR IN ANNAPOLIS The walking tour explores what life was like for residents of Annapolis during the Civil War. Sept. 20 from 10 a.m. to 12 p.m. Annapolis Harbor, 1 Dock St., Annapolis. www.annapolistours.com. $16, $10 ages 3 to 11, younger free.

20 CIVIL WAR REENACTORS Reenactors stage skirmishes on and around the train. Sept. 20 at 11 a.m. Walkersville Southern Railroad, 34 W. Pennsylvania Ave., Walkersville, Md. www.wsrr.org. $12, $11 seniors, $8 children.

20 150TH ANNIVERSARY LIVING HISTORY PROGRAMS ON THIRD WINCHESTER BATTLEFIELD The event includes tours, period music and demonstrations. Sept. 20 from 1 to 5 p.m. Third Winchester Battlefield, 251 First Woods Dr., Winchester, Va. www.shenandoahatwar.org.

21 SPIES IN THE SHADOW OF THE WHITE HOUSE WALKING TOUR Espionage in wars, including the Civil War, is the subject of the tour that begins at the statue of Andrew Jackson. Sept. 21 at 1 p.m. Lafayette Square, 16th and H streets NW. www.spiesofwashingtontour.com. $15.

21 BATTLE OF BRANDY STATION REMEMBRANCE DAY Events include tours, a cannon demonstration, a historic church service and kid-friendly activities. Sept. 21 from 9 a.m. to 3 p.m. Graffiti House, 19484 Brandy Rd., Brandy Station, Va. 540-341-7019. www.brandystationfoundation.com.

25 “THE BURNING” IN THE SHENANDOAH VALLEY Park Ranger Phillip Greenwalt discusses Sheridan’s destruction in the valley and how it destroyed the Confederacy’s resources. Sept. 25 at 7 p.m. Historic Shenandoah County Courthouse, 103 N. Main St., Woodstock, Va. www.nps.gov/cebe. Free.

27 “BREAKING THE VALLEY’S GIBRALTAR”: THE BATTLE OF FISHER’S HILL The seminar explores the battle through a lecture with professor J.A. Noyalas and a carpool tour of battle sites. Sept. 27 from 10 a.m. to 4:15 p.m. Lord Fairfax Community College, 173 Skirmisher Lane, Middletown, Va. 540-868-7191. bit.ly/1iD9F9I. $20.

28 FUNERAL PRACTICES DURING THE CIVIL WAR Lory and Larry Payne lecture. Sept. 28 at 2 p.m. Graffiti House, 19484 Brandy Rd., Brandy Station, Va. www.brandystationfoundation.com. Free.

OCTOBER

1 THE NORTH-SOUTH SKIRMISH ASSOCIATION 130TH NATIONAL COMPETITION The event includes live-fire matches with war-period muskets, carbines, revolvers and more. Oct. 1-5. Fort Shenandoah, 480 Chalybeate Springs Rd., Winchester, Va. www.n-ssa.org. Free.

2 “LIAR, TEMPTRESS, SOLDIER, SPY: FOUR WOMEN UNDERCOVER IN THE CIVIL WAR” Author Karen Abbott discusses the subjects of her book. Oct. 2 from 6:45 to 8:15 p.m. S. Dillon Ripley Center, 1100 Jefferson Dr. SW. www.smithsonianassociates.org. $25.

2 DID THE VALLEY RE-ELECT ABRAHAM LINCOLN? Dennis Frye, Chief of Interpretation at Harpers Ferry National Historical Park, lectures. Oct. 2 at 7 p.m. Old Court House Civil War Museum, 20 N. Loudoun St., Winchester, Va. www.nps.gov/cebe.

3 CONFERENCE ON THE ART OF COMMAND IN THE CIVIL WAR The first day of fighting at Gettysburg is the focus of lectures and a bus tour to the battlefield. Oct. 3-5. Middleburg Community Center, 300 W. Washington St., Middleburg, Va. www.mosbyheritagearea.org. $425, $200 for Friday and Saturday only.

4 SHERIDAN’S FALL 1864 SHENANDOAH VALLEY CAMPAIGN AND THE ELECTION OF 1864 Historian Craig Howell leads the tour, which highlights sites of victory for Union General Phil Sheridan’s Army of the Shenandoah. Presented by the Lincoln Group of the District of Columbia. Oct. 4 from 9 a.m. to 5:30 p.m. Vienna/Fairfax-GMU Metro Station, 2900 Nutley St., Vienna. 202-637-7000. www.lincolngroup.org. $120.

6 CIVIL WAR SONGS AND LETTERS In between songs by Dead Men’s Hollow, actors from Guillotine Theatre read personal writings from the Civil War. Oct. 6 at 4 p.m. Hill Center at the Old Naval Hospital, 921 Pennsylvania Ave. SE. 202-549-4172. hillcenterdc.org. $15 in advance, $20 at the door.

11 THE CIVIL WAR’S KILPATRICK AND DAHLGREN RAID ALL-DAY TOUR Historians Ed Bearss and Gregg Clemmer lead a bus tour that tracks Union Brig. Gen. Judson Kilpatrick and Col. Ulric Dahlgren’s attack on Richmond in 1864. Oct. 11 from 7 a.m. to 7:30 p.m. Holiday Inn Capitol, 550 C St. SW. www.smithsonianassociates.org. $175.

11 CIVIL WAR 150TH SPECIAL EVENT The site of the surrender is reexamined as a small town impacted by the war. Oct. 11-12. Appomattox Courthouse National Historic Park, Highway 24, Appomattox, Va. 434-352-8987. www.nps.gov/apco. Free.

11 USS MONITOR: SYMBOL, LANDMARK, AND SANCTUARY The all-day seminar highlights the construction of the warship, its major battle near Hampton Roads and its conservation at the Mariners’ Museum. Oct. 11 from 10 a.m. to 4:30 p.m. S. Dillon Ripley Center, 1100 Jefferson Dr. SW. www.smithsonianassociates.org. $139.

11 HOUSE + WALKING TOURS: TUDOR PLACE AND THE CIVIL WAR HOME FRONT The house tour and neighborhood walking tour concentrate on the area during the Civil War. Oct. 11. Tudor Place, 1644 31st St. NW. 202-965-0400. www.tudorplace.org. $10 one tour, $15 both tours.

16 “LINCOLN AND THE POWER OF THE PRESS: THE WAR FOR PUBLIC OPINION” Author Harold Holzer discusses his book with CBS Chief White House Correspondent Major Garrett. A reception precedes the event at 6 p.m. Oct. 16 at 6:30 p.m. President Lincoln’s Cottage, Upshur Street and Rock Creek Church Road NW. 202-829-0436. www.lincolncottage.org. $10 lecture, $10 reception.

17 150TH ANNIVERSARY OF THE BATTLE OF CEDAR CREEK The event includes tours, living history reenactments and artillery demonstrations. Oct. 17-20. Cedar Creek Battlefield, 8437 Valley Pike, Middletown, Va. www.ccbf.us. Single-day admission: $18, $9 children.

17 CEDAR CREEK AND BELLE GROVE NATIONAL HISTORICAL PARK SESQUICENTENNIAL Activities include car caravan tours, shuttle tours, hikes, real-time programs and signal corps demonstrations. Oct. 17-20. Cedar Creek and Belle Grove NHP Visitor Contact Station, 7712 Main St., Middletown, Va. www.nps.gov/cebe.

21 “LOATHING LINCOLN” Author John McKee Barr discusses his book, which examines critics of the president. Presented by the Lincoln Group of the District of Columbia. Oct. 21 at 5:30 p.m. in the Willoughby Building, Alfio’s La Trattoria Restaurant, 4515 Willard Ave., Chevy Chase, Md. www.lincolngroup.org. $35 dinner and lecture, $15 lecture only.

25 THE LITTLE WOMEN OF VIRGINIA: THE ADVENTURES OF A NAVY WIDOW AND HER DAUGHTERS DURING THE CIVIL WAR The plight of a widow and her family — as recorded by one of the daughters — is the focus of the program. Oct. 25 at 2 p.m. Historic Blenheim, 3610 Old Lee Hwy., Fairfax, Va. 703-591-0560. bit.ly/1pE4ANr. Free.

26 SPIES IN THE SHADOW OF THE WHITE HOUSE WALKING TOUR Tales of espionage in Washington from the Cold War and the Civil War are the subject of this tour, which starts at the statue of Andrew Jackson. Oct. 26 at 1 p.m. Lafayette Square, 16th and H streets NW. www.spiesofwashingtontour.com. $15.

31 ALEXANDER GARDNER The 150th anniversary of the artist’s “cracked-plate” portrait of President Lincoln. Oct. 31 through May 3. National Portrait Gallery, Eighth and F streets NW. 202-633-1000. www.npg.si.edu. Free.

NOVEMBER

1 HOLLYWOOD AND THE CIVIL WAR: “SHENANDOAH” The 1965 movie starring Jimmy Stewart is screened. Nov. 1 at 6 p.m. Surratt House Museum, 9118 Brandywine Rd., Clinton, Md. 301-868-1121. www.surratt.org. Free.

1 CAVALIERS, COURAGE AND COFFEE PROGRAM The Gray Ghost Interpretive Group performs local stories from the Civil War. Nov. 1 at 7:30 p.m. Aldie Mill, 39401 John Mosby Hwy., Aldie, Va. www.mosbyheritagearea.org. $10, $5 students.

8 THE ELECTION OF 1864 SYMPOSIUM A panel of speakers discuss the reelection of Abraham Lincoln. Presented by the Lincoln Group of the District of Columbia. Nov. 8 at 9 a.m. E. Barrett Prettyman U.S. District Courthouse, 333 Constitution Ave. NW. www.lincolngroup.org. $80.

8 SOLDIER-LED TOURS OF THE FORT An actor portraying a Civil War veteran leads the 90-minute tours, which are presented in honor of Veterans Day. Nov. 8 at 10 a.m. and 2 p.m. Fort Ward Museum and Historic Site, 4301 W. Braddock Rd., Alexandria, Va. 703-746-4848. www.fortward.org. Free.

22 BROTHER AGAINST SISTER: RAPE IN THE CIVIL WAR Author Kim Murphy discusses the frequency of rape during the war. Nov. 22 at 2 p.m. Historic Blenheim, 3610 Old Lee Hwy., Fairfax, Va. bit.ly/1pE4ANr. Free.

29 CAVALIERS, COURAGE AND COFFEE PROGRAM The Gray Ghost Interpretive Group performs scenes inspired by the Great Burning Raid. Nov. 29 at 7:30 p.m. Silver Brook Farm Bed and Breakfast, 15286 Woodgrove Rd., Purcellville, Va. www.mosbyheritagearea.org. $8, $4 students.

DECEMBER

4 COTTAGE CONVERSATION WITH CHRIS DEROSE AND MICHAEL BESCHLOSS DeRose, author of “The Presidents’ War: Six American Presidents and the Civil War That Divided Them,” discusses his book with historian Michael Beschloss. A reception precedes the lecture at 6 p.m. Dec. 4 at 6:30 p.m. President Lincoln’s Cottage, Upshur Street and Rock Creek Church Road NW. 202-829-0436. www.lincolncottage.org. $10 reception, $10 lecture.

7 CHRISTMAS IN CAMP The living history event includes Civil War-era customs, crafts, demonstrations and tours. Dec. 7 from noon to 4 p.m. Historic Blenheim, 3610 Old Lee Hwy., Fairfax, Va. 703-591-0560. bit.ly/1pE4ANr. Free.

13 WASHINGTON DURING THE CIVIL WAR Photos during the Civil War around the Patent Office Building and around the D.C. metropolitan area. Dec. 13 through Jan. 25. National Portrait Gallery, Eighth and F streets NW. www.npg.si.edu. Free.

13 ’TIS THE SEASON Holiday traditions from the time of the Civil War are demonstrated. Dec. 13 from noon to 4 p.m. Surratt House Museum, 9118 Brandywine Rd., Clinton, Md. 301-868-1121. www.surratt.org. $3, $2 seniors, $1 ages 5 to 18.

13 CIVIL WAR CHRISTMAS IN CAMP OPEN HOUSE The museum and site celebrate Christmas as it would have been during the war. Dec. 13 from noon to 4 p.m. Fort Ward Museum and Historic Site, 4301 W. Braddock Rd., Alexandria, Va.. 703-746-4848. www.fortward.org. $2 suggested donation.

16 “TURNING LINCOLN’S VISION INTO LAW: JOHN BINGHAM AND THE FOURTEENTH AMENDMENT” Law professor and author Gerard Magliocca discusses the amendment. Presented by the Lincoln Group of the District of Columbia. Dec. 16 at 5:30 p.m. in the Willoughby Building, Alfio’s La Trattoria Restaurant, 4515 Willard Ave., Chevy Chase, Md. www.lincolngroup.org. $35 dinner and lecture, $15 lecture only.