During the Civil War, the Union and the Confederate armies fought many battles, the bloodiest battle of that war —and in the history of the United States— occurred in 1863 at Gettysburg, Pennsylvania. Three Days of persistent fighting left more than fifty thousand soldiers dead or injured. Discover how the battle of Gettysburg became the turning point of the Civil War. Find out how generals from both sides reacted and how their decisions influenced the battle's outcome. Gettysburg National Military Park remains as a memorial to the many soldiers who died there.