World War II was a global conflict that lasted from 1939 to 1945. It was fought between the AXIS powers, which included Germany, Italy, and Japan, and the Allied powers, which included the United States, the United Kingdom, and the Soviet Union. The AXIS powers were the aggressors in the war, while the Allies sought to defend against them. The term 'WWII Side' refers to the two sides of the conflict, with the AXIS being the four-letter answer and the Allies being the six-letter answer.