The rank structure is as follows:[2] The BCoSO is subdivided into five sections as follows:[3] The authority of the Sheriff and all sworn deputies are constitutional in origin.

[3] The agency's uniform shoulder patch depicts two Maryland Militiamen, who also happened to be Baltimore County Deputy Sheriffs, who were killed, during the British land and sea attack at the Battle of North Point on September 12, 1814, in the War of 1812 (later celebrated as a state, county, and city holiday as "Defenders' Day" - simultaneous with the bombardment of Fort McHenry from the Patapsco River on September 13-14th, and the inspiration for the writing of the national anthem, "The Star-Spangled Banner" by Francis Scott Key, 1779–1843).

A memorial known as the "Wells-McComas Monument" to the two fallen Militia Soldiers/Deputies is located on North Gay Street by the intersecting Aisquith and Orleans Streets in "Ashland Square" in East Baltimore City, where they were buried beneath after being exhumed in the 1870s from their original grave site and moved with great ceremony and publicity to Ashland Square.

A smaller memorial where the two Deputies/Militiamen and nearby General Ross were killed is located on Old Battle Grove Road in Dundalk near "Battle Acre", the small, one-acre park donated to the State on the 25th Anniversary of Defenders' Day, in 1839 marking the center of the North Point Battlefield off Old North Point Road, its later parallel by-pass - North Point Boulevard at the intersection with German Hill Road, from September 12, 1814.

An attempt to at least mark the general area of the historic battlefield site despite the high-speed highway routed through its fields along with the surrounding intensive post-World War II commercial and residential development unthinkingly constructed around the narrow peninsula field between Bread and Cheese Creek off Back River to the north and Bear Creek leading to the Patapsco to the south.