Complex sentence: The 9th Panzer Division was a panzer division of the Wehrmacht Heer during World War II. It came into existence after 4th Light Division was reorganized in January 1940.
Split into simpler sentences: The 9th Panzer Division was a panzer division of the Wehrmacht Heer. The division was only active during World War II, and came into existence after 4th Light Division was reorganized in January 1940.