World War II[b] or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries …

Dec 11, 2025 · World War II, conflict that involved virtually every part of the world during the years 1939–45. The war was in many respects a continuation, after an uneasy 20-year hiatus, of the …

Oct 29, 2009 · On September 1, 1939, Hitler invaded Poland from the west; two days later, France and Britain declared war on Germany, beginning World War II. On September 17, Soviet troops invaded …

Learn more about World War II history through WWII scholarship from The National WWII Museum.

Read everything you need to know about the Second World War, by exploring our WWII archives of in-depth history articles, podcasts, slideshows and more.

Explore a detailed timeline of World War Two - the causes, events, soldiers and its aftermath. Discover facts about what happened during the most destructive war in history.

ABMC honors the services of overseas U.S. armed forces by maintaining and promoting America’s overseas commemorative cemeteries and memorials.

Learn all about the major events of World War II from 1918 to 1942.

May 2, 2025 · World War II (WWII) was a long and bloody war that lasted about six years. Officially beginning on September 1, 1939, when Germany invaded Poland, World War II lasted until both the …

It split the world's nations into two opposing military alliances. The Allies - led by Britain and her Empire, the United States, the Soviet Union and France - united against the Axis Powers of Nazi Germany, …