The Battle of Gettysburg influenced foreign perceptions of the Civil War by Strengthening support for the Union.

The significant victory for the Union showcased the Army's strength and ability to fend off Confederate attacks, altering international perspectives. In the aftermath of the battle, foreign nations, especially Britain and France, became less inclined to acknowledge or back the Confederacy. The result indicated that the Union was a powerful entity, bolstering the conviction that it could maintain the integrity of the nation. This change in viewpoint was crucial in reducing foreign involvement in support of the Confederacy.