 After the war, in 1784 Petersburg annexed the adjacent towns of Blandford (also called Blanford), Pocahontas and the outlying town of Ravenscroft, which became neighborhoods of the larger city.An area known as Gillfield was annexed in 1798.Residents' devotion to the cause of America two decades later during the War of 1812 (1812–1815) led to the formation of the militia unit of the Petersburg Volunteers—who distinguished themselves in action at the Siege of Fort Meigs on the Great Lakes frontier on May 5, 1813.