Sep 15 1917 German ace Oberleutnant Kurt Wolff is KIA in a…

Sep 15 1917 German ace Oberleutnant Kurt Wolff is KIA in a dogfight with Royal Flying Corps planes. He had 33 kills… https://t.co/viLjaz58zi http://twitter.com/ThisDayInWWI/status/908461759706492928