June 22

Chesapeake-Leopard Affair

September 30

Gin Riot at Hampstead Hill (Patterson Park), Baltimore City

June 18	War declared on England
June 22	Riots occur at the office of Federal Republican at NW Gay and Water St, Baltimore City
July 27-29	Riots occur at the second office of the Federal Republican and County Jail, Baltimore City
October 13	Battle of Queenston Heights, Ontario Canada. British Major General Isaac Brock is killed during the fighting.

April 24	Poole’s Island is the staging point for British raids, Harford County
April 27	American’s capture York (now Toronto, Canada)
April 29	Skirmish of Elkton, Cecil County
April 29	Skirmish of Frenchtown, Cecil County
May 3	Skirmish of Havre de Grace, Harford County
May 3	Principio Iron Works, producer of cannon and ordinance, is burned by the British, Cecil County
May 5	Skirmish of Fredericktown and Georgetown, Cecil and Kent Counties
May 6	Town of Charlestown capitulates to the British, Cecil County
Summer	Mary Pickersgill is contracted by Lt. Col. George Armistead to make two flags for Fort McHenry, Baltimore City
August 10	Battle of St. Michaels, Talbot County
August 13	Repulsed raid of Queenstown, Queen Anne's County
August 26	Skirmish of St. Michael’s, Talbot County
September 13	Oliver H. Perry’s victory on Lake Erie

June	Raid of Graham Landing, Calvert County
June 1	Raid of St. Jerome's Creek, St. Mary's County
June 1	Naval Skirmish off Cedar Point, St. Mary's County
June 8 -10	First Battle of St. Leonard Creek, Calvert County
June 8	Raid of Rousby Hall, Calvert County
June 10	Comm. Joshua Barney ambushes a British Barge near Spout Farm, Calvert County
June 12	Raid of Broomes Island, Calvert County
June 14	Raid of Sotterley, St. Mary's County
June 16	Skirmish of Hall's Creek, Calvert County
June 16	Raid of Lower Marlborough, Calvert County
June 17	Raid of Magruder's Landing, Prince George's County
June 18	Raid of Coles Landing, St. Mary's County
June 18	Raid of Ballard's Landings (Lower Marlborough), Calvert County, Maryland
June 19	Skirmish of Benedict, Charles County
June 26	Raid of Point Patience, Calvert County
June 26	Second Battle of St. Leonard Creek, Calvert County
June 30	Raid of Chaptico, St. Mary’s County
July 2	Raid of  St. Leonard Town, Calvert County
July 5	Battle of Chippewa, Canada
July 17	Town of Huntingtown is burned by the British, Calvert County
July 19	Raids of Leonardtown and  Prince Frederick, St. Mary’s and Calvert Counties
July 25	Battle of Lundy’s Lane, Canada
August 2	Raid of Brenton Bay, St. Mary's County
August 4	Raid of Slaughter Creek, Dorchester County
August 11-12	Raid of St. Mary's River, St. Mary's County
August 18	Raid of Eastern Bay, Talbot County
August 19	British land at Benedict to begin their march to Washington, DC, Charles County
August 19	Raid of St. Leonard Town, Calvert County
August 20	Raid of Rock Hall, Kent County
August 20	Raid of Worton Creek, Kent County
August 21	Nottingham occupation, Prince George's County
August 22	Skirmish at Pig Point, Anne Arundel County
August 22	Skirmish at Bellefields, Prince George’s County
August 23	British Major General Robert Ross and Rear Admiral Coburn dine at Melwood, Prince George’s County
August 24	Battle of Bladensburg, Prince George's County
August 24	British troops capture and burn Washington, D.C.
August 24	Addison Chapel serves as temporary British headquarters, Prince George’s County
August 24	British occupy Mt. Calvert, Prince George's County
August 24	The Lion is burned by the British near Hancock’s Resolution, Anne Arundel County
August 26	Brookeville serves as the U.S. Capitol for the day
August 26 or 27	Dr. William Beanes is taken from his Upper Marlboro home by the British, Prince George’s County
August 27	Destruction of Fort Warburton(Fort Washington), Prince George's County
August 28 & 30	Raid of Fairlee Creek, Kent County
Aug 28 – Sept 3	British occupation of Alexandria, Virginia
August 30	Battle of Caulk's Field, Kent County
Summer	Occupation of Blackistone Island, St. Mary's County
September 3-6	White House skirmish (Belvoir Mansion), Fairfax County, Virginia
September 5	Indian Head skirmish, Charles County
September 7	Georgetown lawyer Francis Scott Key and U.S. Agent for the exchange of prisoners John Stuart Skinner board the HMS Tonnant to negotiate the release of Dr. William Beanes, St. Mary’s County
September 11	Battle of Plattsburg, Lake Champlain
September 12	Raid of Sollers House, Sollers Point, Baltimore County
September 12	British land at North Point (Fort Howard) to begin land invasion of Baltimore, Baltimore County
September 12	British Major General Robert Ross is mortally wounded (near the present day Aquila Randall monument) during the Battle of North Point, Baltimore County
September 12	Battle of North Point, Baltimore County
September 12	British burn Todd’s Inheritance, and American signal station, Baltimore County
September 12-15	Battle of Baltimore , Baltimore City
September 13	British land advance retreats from Hampstead Hill (Patterson Park), Baltimore City
September  14	Early morning British landing attempt is repelled by flotillamen at Fort Babcock, Baltimore City
September 14	Francis Scott Key views the American flag flying over Fort McHenry after the bombardment and is inspired to write a poem entitled the “Defence of Fort M'Henry”
September 17	Baltimore American prints the first copies of  “Defence of Fort M'Henry” as handbills, Baltimore City
Sept 18-19	Drum Point events, Calvert County
September 20	Baltimore Patriot is the first news office to print “Defence of Fort M'Henry” as part of the newspaper, Baltimore City
October19	Raid of Castle Haven, Dorchester County
October 27	Tracys Landing skirmish, Anne Arundel County
October 30	Raid of St. Inigoe’s, St. Mary’s County

January 8	Battle of New Orleans
January 12	Raid of Lakes Cove, Dorchester County
February 7	Skirmish of Taylor's Island, Dorchester County
February 17	Treaty of Ghent signed by Madison at Octagon House, Washington, DC

This list was created from information in the Star-Spangled Banner National Historic Trail Feasibility Study and Environmental Impact Statement (National Park Service, US Department of the Interior, Northeast Region, March 2004) and The War of 1812 in the Chesapeake: A Reference Guide to Historic Sites in Maryland, Virginia, and the District of Columbia by Ralph E.Eshelman, Scott S. Sheads and Donald R. Hickey (Johns Hopkins University Press, 2010). 

Overall timeline of the War of 1812