The capture of Vicksburg was significant to the Union because, as a result of this event, Texas, Arkansas and Louisiana were isolated from the rest of the Confederation and the loss also meant for the Confederation the loss of livestock and agricultural resources of the first two. Additionally, the victory at Vicksburg and the victory at Gettysburg the day before marked the beginning of the end of the civil war, while Grant with his victory increased his fame, which later made him commander-in-chief of the Union troops during that fight.