you had to eat rats and mules and live in dark caves. all the while giant explosions were going on outside forming craters closer and closer to you. I image you'd be starving too.
being the turning point of the civil war.
ANSWER Because they represented the turning point of the war in favour of the Union. After Vicksburg the Confederacy lost the control of the Mississippi and was split into two parts and after Gettysburg the Confederate armies were pinned down to stay on the mere defensive without being able to regain any effective strategic initiative.
Vicksburg isolated the southern states west of the Mississippi from the states in the Deep South. It also allowed Federal forces to turn their attention to destroying the infrastructure of the South to hasten the end of the war.
Pemberton received contradictory orders from his immediate superiors, so he would up doing nothing. The South did not really have any coordinated strategy. Lee claimed that his invasion of Pennsylvania was an attempt to draw union forces away from the Vicksburg area, but it is more likely that he voiced that argument to Davis in an attempt to prevent his own troops from being syphoned off to relieve Vicksburg.
Infection
After the surrender of Vicksburg in July 1863, Confederate prisoners were primarily sent to various Union prison camps. Many were taken to Camp Chase in Ohio and other facilities such as Johnson's Island in Lake Erie. Some prisoners were held in temporary camps near Vicksburg itself before being transported to these more permanent locations. The conditions in these camps varied, often reflecting the hardships of wartime logistics and resources.
dying from disease
In the Battle of Galveston of 1862, 400 Union troops had surrendered to the Confederate forces and were captured, as well as one gunboat being captured and another destroyed. However, 26 Confederate forces had been killed and 117 wounded. It is generally seen that the Confederate forces won the Battle of Galveston in 1862.
The Battle of Gettysburg changed the course of the Civil War by causing a Confederate defeat so serious that from then on the Union held the initiative in the war. The Confederate hope had been to invade the North with such success that the war would turn in the favor of the South. Instead, Union offensives followed on the heels of the Gettysburg; just as importantly, the Union regained its confidence and resolve.
There were no casualties on either side during the bombardment of Fort Sumter. There was one Union soldier, Private Daniel Hough, that was killed in an accident after the battle. As the US flag was being lowered, a 100 gun salute was in progress when a cannon burst and killed the soldier..
Probably Vicksburg and Gettysburg - two Confederate defeats announced to a joyful Northen public on the same day - Fourth of July 1863. Vicksburg ended the war in the West. Gettysburg ended Lee's amibitons to invade the North and threaten Washington DC.
limb(s) amputation and/or death from infection