What military posts were gained by union victories in the civil war?

Also in July 1863, Union forces under Ulysses S. Grant took Vicksburg (Mississippi) in the Siege of Vicksburg, a victory that would prove to be the turning point of the war in the western theater.Oct 15, 2009

In the eastern part of the confederacy, the Army of the Protomac met with mixed success. The Union Army failed to capture Richmond and won at Antietam only because the Confederates withdrew from the field first.