Union XII Corps

      General Joseph K. Mansfield                      General Henry Warner Slocum                General Alpheus S. Williams                     General John W. Geary


Battle of Gettysburg

Official Records of the War of the Rebellion, Gettysburg, Union Twelfth Corps

          Part 1

          Part 2

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History of the Twelfth Corps, Gettysburg

Source: Fox, William F. In Memoriam: Henry Warner Slocum. Albany, NY: J. B. Lyon, 1904. Also known as Slocum and His Men: The Twelfth Corps.