In September 1939, Britain entered into what would become the world's most devastating war to date - World War 2.
Lasting six years, it was a war that changed the lives of millions of people around the globe. Find out what happened during this hugely important historical event with National Geographic Kids’ ten facts...
- the 'Allies' and the 'Axis'. The major Allied Powers were Britain, France, Russia, China and the United States. The major Axis Powers were Germany, Italy and Japan.
Together with the Nazi Party, he wanted Germany to rule Europe. To gain more land and power, on 1 September 1939 German troops invaded Poland. After Hitler refused to stop the invasion, Britain and France declared war on Germany - World War II had begun.
By the summer of 1941 they had invaded France, Belgium, Holland, Luxembourg, Denmark, Norway, Greece, Yugoslavia* and the USSR*.
Hitler wanted to create what he thought was the 'best' and strongest race - and to the Nazi Party, this excluded certain groups, such as Jews, Gypsies and those with physical and mental disabilities. In an attempt to eliminate a 'racial enemy' outside of Germany, such groups were also persecuted in the countries invaded by German forces.
Around six million Jewish people were killed during World War 2 in one of history’s most terrible events - the Holocaust. Racist in his views, Hitler blamed Jewish people for Germany losing World War I and claimed they were dangerous to German people and society.
In 1937 (before World War II had officially begun) under Emperor Hirohito, Japan attacked China, bringing the two nations into years of conflict.
- at their Naval Base at Pearl Harbor in Hawaii. On 8 December 1941 (the very next day), the US declared War on Japan and, in turn, its German allies.
Such countries were Spain, Sweden and Switzerland - who chose not to join either side.
In 1944, an Allied army crossed from Britain to free France from Nazi rule. One year later, Allied armies invaded Germany, forcing the Germans to surrender. After nuclear attacks on Japan's major cities Hiroshima and Nagasaki, Japan also surrendered to Allied forces in August the same year. World War 2 had ended.
- that's more than the entire population of the United Kingdom.