Army National Guard units with campaign credit for the War of 1812 on April 5, 1807, as the 3rd Regiment of Artillery. The four aforementioned companies were reorganized and redesignated on August 25, 1808, as the 2nd Battalion, 3rd Regiment of Artillery, which was reorganized and redesignated as the 2nd Battalion, 11th Regiment of Artillery on June 13, 1812. This regiment was mustered into federal service twice during the War of 1812: September 15, 1812, through December 15, 1812, and September 2, 1814, through December 2, 1814. During its first period of federal service, the 2nd Battalion, 11th Regiment was stationed on Ellis Island and Bedloe Island (later renamed Liberty Island); during
Green Island (Rideau River) of a rail bridge that once led to Ottawa's Union Station. Green Island has several commemorations including: Green Island was the location of Old City Hall, of the old city of Ottawa, before the amalgamation of the region in 2001. After considering 36 different locations, Green Island was confirmed as the new location of Ottawa City Hall on January 31, 1956. The official sod turning ceremony was held on September 16, 1956. Construction was completed in 1958. City Council held its first meeting at the new location on July 21, 1958. Princess Margaret officially opened the stone and glass building,