Based on the book "Six Frigates"
http://www.amazon.com/s/ref=nb_sb_ss_i_1_6?url=search-alias%3Dstripbooks&field-keywords=six+frigates+the+epic+history+of+the+founding+of+the+u.s.+navy&sprefix=Six+Fr%2Cstripbooks%2C188
http://www.amazon.com/s/ref=nb_sb_ss_i_1_6?url=search-alias%3Dstripbooks&field-keywords=six+frigates+the+epic+history+of+the+founding+of+the+u.s.+navy&sprefix=Six+Fr%2Cstripbooks%2C188The British commanders were engaging in a campaign of essentially "terrorist" raids along the Chesapeake Bay shore in a series of small scale amphibious landings .
Due to the incompetence of the Commander the Army commander in the Washington area the only forces available were a poorly coordinated mix of sailors, US Marines, regular Army and local Militia who met the British at the town of Bladensburg Maryland.
After putting up a brave, but mismanaged defense the Army and militia withdrew under cover of fire from the Marines assisted by Navy gunners manning a few field guns .
The British were so impressed by this that when they got to Washington the commander ordered the Marine Commandants quarters at 8th and I streets to be spared making it the oldest govt building in Washington.