After World War One ended in 1918, Germany had to give up land and was banned from having armed forces.
In 1933 the German people voted for a leader named Adolf Hitler, who led a political party in Germany called the National Socialists or Nazis. Hitler promised to make his country great again and quickly began to arm Germany again and to seize land from other countries.
On 8 May 1945, the Allies accepted Germany’s surrender, about a week after Adolf Hitler had committed suicide.
It was dangerous living in a big city during the war. Cities were the target of enemy aircraft that flew over at night and dropped bombs.
At 4:56pm on 7 September 1940, the air raid sirens wailed as the German Air Force, the luftwaffe, launched a massive raid on London. Over 350 bombers flew across the Channel from airfields in France and dropped 300 tonnes of bombs on the docks and streets of the East End of London.
Evacuation means leaving a place. During the Second World War, many children living in big cities and towns were moved temporarily from their homes to places considered safer, usually out in the countryside.