The Great War II
"World War II (WWII or WW2)", also known as the "Second World War", was a global war that lasted from 1939 to 1945, though related conflicts began earlier. It was the most widespread war in history, and directly involved more than 100 million people, from more than 30 different countries. It involved the vast majority of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis. World War Two is equipped with a lot of different side wars, such as the German invasion of Poland.