Complex sentence: William W. Chisman (1843--1925) was a Union Army soldier during the American Civil War who received the Medal of Honor for gallantry during the Siege of Vicksburg on May 22,1863.
Split into simpler sentences: William W. Chisman (1843--1925) was a Union Army soldier during the American Civil War. He received the Medal of Honor for gallantry during the Siege of Vicksburg on May 22,1863.