Coincidentally, on that same day, the forces of General Ulysses S. Grant drove the Confederate garrison out of Jackson, Mississippi, and captured the city … the state capital. (Of course, this news took a couple weeks to reach the gold fields.)
Supported by river gunboats, Grant’s army had crossed the Mississippi at the end of April, with relatively light losses. Then Union forces, by a combination of maneuver and superior strength, drove through Confederate defenses to reach Jackson.
Grant stayed in Jackson only long enough to burn or wreck critical factories, warehouses, bridges, and railways around the area. The destruction of vital trackage, in all four directions out of the city, was particularly damaging. Given the Confederate’s limited repair resources, Jackson was severely crippled as a transportation hub, and never truly recovered until after the war.
|Union Flag Raised Over Jackson, MS. Harper's Weekly Engraving.|
References: “The Boise Mines,” The Oregonian, Portland (May 14, 1863).
“The Eastern News,” Evening Bulletin, San Francisco (May 21, 1863).
James M. McPherson, Battle Cry of Freedom: The Civil War Era, Oxford University Press, USA, New York (1988).