Claim: Gary Ridgway killed people during the world wars.
Evidence: Gary Leon Ridgway -LRB- born February 18 , 1949 -RRB- is an American serial killer known as the Green River Killer.
World War II -LRB- often abbreviated to WWII or WW2 -RRB- , also known as the Second World War , was a global war that lasted from 1939 to 1945 , although related conflicts began earlier.