Tom Hanks as Forrest Gump: Though at an early age he is deemed to have a below average IQ of 75, he has an endearing character and shows devotion to his loved ones and duties, character traits which bring him into many life-changing situations.
The Battle of Gettysburg was fought because General Lee had a need to find food and other supplies for his men who had just been through a very hard winter. The Battle of Gettysburg was the most famous of all battles during the Civil War, and it involved the greatest number of fatalities in the entire war.
The Battle of Gettysburg was considered the turning point of the Civil War because the Confederates were winning the war, but after the Union wins the Battle of Gettysburg, the war gets a little closer. The Union wins the war, so this battle must have been the motivation for the Union to keep fighting.