In February 1864, Major General Quincy A. Gillmore, commander of the Union's Department of the South at Hilton Head, South Carolina, ordered an expedition into Florida to secure Union enclaves, sever Confederate supply routes (especially for beef and salt), and recruit black soldiers. Brigadier General Truman Seymour, in command of the expedition, landed troops at Jacksonville, in an area already seized by the Union in March 1862.