The document discusses the Battle of Gettysburg during the American Civil War, where the Confederates suffered around 1/3 casualties compared to the Union's 1/4. It notes that a national cemetery was later constructed at Gettysburg for the fallen soldiers. While a Senator gave the main speech at the cemetery's dedication, Abraham Lincoln delivered a few remarks that came to be known as the Gettysburg Address, which is still remembered today unlike the Senator's speech.