WWII: Why did the U.S. get involved in the war? At the beginning, the United States expressed the determination to remain a neutral nation. When W.W.II began, opinions among the Americans were divided. Some felt that the Nazi Germany was not only a threat to Europe and democracy, but to civilization itself. Other believed that Europe's wars were no affairs of the U.S. As the war progressed, the U.S. found itself getting involved. They felt sympathy for the British after what happened at Dunkirk. They started helping G.B. with weapons and food. 50 old American naval des