USS Cairo, Vicksburg, Mississippi. “Ironclad” gunboat commissioned in 1862, used by the Union to patrol the Mississippi River during the American Civil War.
Vicksburg National Military Park, site of the 1863 Battle and Siege of Vicksburg (Mississippi) during the American Civil War. Vicksburg was the last major Confederate stronghold on the Mississippi River. After its surrender, Union troops controlled the river for the remainder of the war