The Battle of Gettysburg had consequential effects on the Civil War. It boosted Union morale, prevented the forceful end of the war by the South, and was the bloodiest battle in the Civil War.

The Battle of Gettysburg had huge effects on the Confederacy's war effort. 

1. The Confederacy had been trying to forcefully end the Civil War by invading Washington D.C. With the Union victory at the Battle of Gettysburg, any hopes the Confederacy had of invading Washington D.C. were over. 

2. It did not boost Confederacy morale.  Before the Battle of Gettysburg, the Army of the Confederate States was considered invincible, a soldier even wrote, ""You may expect to hear brilliant achievements from our invincible army." However, after the Battle of Gettysburg, the Confederate army was very discouraged. A Confederate soldier even said, "We are whipped… the soldiers are all discouraged…” Robert. E. Lee had lost some of his drive, and so had much of his men. 

3. The Confederacy had 28,063 casualties. This was partly because there was a huge depletion in ammunition stocks, which lead to a lot of hand-to-hand combat.