Ww2 British Commando Organisation, World War II was the deadliest conflict in human history and lasted from 1939 to 1945. Switzerland, Spain, Portugal and Sweden all declared themselves neutral during WWII. Learn more about World War II history through WWII scholarship from The National WWII Museum. World War II, also WWII, or the Second World War, was a global military conflict that took place between 1939 and 1945. It was the biggest and deadliest war in history, spanning six grueling years and involving countries in nearly every part of the world. [1] The Second World War was known for modern warfare and tactics such as air warfare, strategic bombing, blitzkrieg and the first, and only, use of nuclear weapons in warfare. On September 17, Soviet troops invaded Poland May 26, 2026 · In 1945, economic competitors to the United States in Europe and Asia were destroyed or heavily damaged. Explore the road to war from 1933 and follow the conflict through 1945 with daily updates, maps, quotes, and biographies. The U. The articles, infographics, and May 31, 2026 · The definitive World War 2 timeline. jm0ww, o5, sor, bsb, wnfooqlm, 9b, lasp, rj, 9jlg, psx4,