On the 19th of November 1863, President Lincoln delivered his famous address at a ceremony dedicating the Soldiers' National Cemetery in Gettysburg Pennsylvania.
The speech was brief (only about 2 minutes), but it has gone down in history as one of the most compelling ever given by a U.S. President. The Battle of Gettysburg was the costliest of the Civil War, as more than 51,000 soldiers, both Union and Confederate, were killed, injured or captured in a 3 day period. The war dragged on for another year and five months before officially coming to an end, with Lee's surrender to Grant at Appomattox Court House, on the 9th of April 1865. President Lincoln was assassinated just days later, on the 14th of April 1865.