Complex sentence: Erwin Jaenecke (22 April 1890-3 July 1960), was a German general of engineers, serving during World War II against Poland, France and the Soviet Union.
Split into simpler sentences: Erwin Jaenecke (22 April 1890-3 July 1960), was a German general of engineers. He served during World War II against Poland, France and the Soviet Union.