The present design, which incorporates both of the coats of arms used by George Calvert, began to appear officially after the Civil War. The flag in its present form was first flown in Baltimore, on October 11, 1880, at a parade marking the 150th anniversary of the founding of Baltimore (1729–1730). It was flown again on October 25, 1888, at the Gettysburg Battlefield during ceremonies dedicating monuments to the Maryland regiments of the Army of the Potomac by reorganized regiments of the former state militia, now the Maryland National Guard.