World War II (abbreviated WWII), or the Second World War, was a worldwide conflict fought between the Allied Powers and the Axis Powers, from 1939 until 1945. Armed forces from over seventy nations engaged in aerial, naval, and ground-based combat. Spanning much of the globe, World War II resulted in the deaths of over sixty million people, making it the deadliest conflict in human history. The war ended in an Allied victory.
On September 1, 1939, Germany, led by Adolf Hitler and the Nazi Party, invaded Poland. On September 3 at 11.15 GMT, the United Kingdom, Australia and New Zealand, followed six hours later by France, responded by declaring war on Germany, initiating a widespread naval war.
The Empire of Japan invaded China on July 7, 1937.
The German High Command under Generaloberst Alfred Jodl surrendered unconditionally all German forces on May 7, 1945 in Rheims, France.
The Japanese surrendered on August 14, 1945, or V-J day, signing the Japanese Instrument of Surrender on September 2. The Japanese troops in China formally surrendered to the Chinese on September 9, 1945.