Do I need to know about World War 1 to study World War 2?

The First World War was also a war against people. Invading armies committed atrocities against civilians in the areas they occupied. Attacks on civilians became increasingly common as each nation tried to break their opponents’ home morale and diminish popular support for the war. read more

World War II began on September 1,1939 when Germany attacked Poland without a formal declaration of war. In support of their mutual defence treaty obligations with Poland, France and Great Britain issued ultimatums to Hitler for the immediate withdrawal of German forces from Poland. read more

Fought mostly by soldiers in trenches, World War I saw an estimated 10 million military deaths and another 20 million wounded. While many hoped that World War I would be "the war to end all wars," in actuality, the concluding peace treaty set the stage for World War II. read more