Union offensive continues on the Mississippi River
Union forces 150 weeks ago during the Civil War continued raining cannon shot and rifle fire down Confederates ensconced behind defensive works at Port Hudson, La. For 48 days the siege of the enemy garrison at Port Hudson would go on even as Union forces sought to dislodge Confederates defending Vicksburg, Miss. In May and June of 1863, Union Maj. Gen. Ulysses S. Grant mounted the prolonged siege of Vicksburg, a city on bluffs overlooking the Mississippi River. Grant knew that taking control of the Mississippi River's entire lower stretch was a major key to splitting the Confederacy and turning the momentum of war to the Union side. Ultimately Grant would succeed in that operation, eventually forcing the capitulation of Vicksburg on July 4, 1863, and inducing the surrender of Port Hudson days later. His military achievements along the Mississippi also would serve to catapult Grant to the post of general-in-chief of the Union armies.