of Dutch Gap and the second clash at Deep Bottom in August 1864; later that year, Canonicus was ordered to Fort Fisher, North Carolina, and was there for the siege, reduction and surrender of that fort on January 15, 1865. That night, Canonicus and were ordered to Charleston for similar duty; Canonicus would throw the last hostile shot at the rebels on Sullivan's Island, who were retreating in the early morning of February 18. Following the surrender of Charleston, Canonicus and the rest of the squadron were sent in pursuit of the ironclad ram CSS Stonewall; this brought Canonicus to Havana, where she became the first American ironclad to enter a foreign port. Canonicus returned to the States on June 26, 1865. Legacy, later years and family Following the war, Macomb was on inspection duty at the then-new Philadelphia Navy Yard at League Island, assigned to laying up the bulk of the Union ironclad fleet. He was assigned in 1866 to the Pensacola Navy Yard, then in 1868 to the Portsmouth Navy Yard. He was assigned in 1871 to , and was named Fleet Engineer of the North Atlantic Fleet, where he served from 1871 to 1873. He returned to the Portsmouth Navy Yard in 1879, and in 1882 he was named president of a board ordered by Congress to survey and appraise the Navy's surplus inventory, much of it dating to the Civil War. He remained in that duty until 1883, and then was assigned to the Boston Navy Yard, (the old Charlestown Navy Yard) where he remained until his retirement at the mandatory age of 62. Macomb contributed several inventions to the Navy, and the greater maritime community, including the Macomb bilge strainer and the hydraulic lift used in the turrets of ironclads. He built and installed the first fresh-water maker in any U.S. Navy vessel. Macomb retired February 27, 1889, with the relative rank of commodore. He was later promoted to rear admiral. Macomb married Augusta H. Pope in Kittery, Maine, in 1858. They had three children; a son who died in infancy, and two daughters, one of whom died unmarried. Macomb's retirement home was in North Cambridge, Massachusetts, and he died January 27, 1911, in New York City. Namesake In 1941, the destroyer was named in honor of Rear Admiral Macomb and his cousin, Commodore William H. Macomb (1811–1872). (They were simultaneously first and second cousins;