Description:
The siege of Port Hudson affected the Civil War and the men who fought there in a number of ways. The surrender gave the Union control of the Mississippi River, cutting off important states such as Arkansas and Texas. Both sides suffered heavy casualties: about 5,000 Union men were killed or wounded, and an additional 4,000 fell prey to disease or sunstroke; Gardner's forces suffered around 700 casualties, several hundred of whom died of disease. And on both sides, even many of those who survived found their view of war permanently changed.
Wikipedia