On 3 September 1939 Britain and France found themselves at war with Germany. What were the reasons for this new war with Germany? As far as we are concerned, it was the invasion of Poland by Germany. Hitler having already invaded smaller European countries, now looked towards Poland, despite having signed a non-aggression pact with Poland some years earlier. On 1 September, Hitler's huge army moved eastwards across the Polish border. What this section explores is what happened next, as millions of servicemen and civilians were mobilized to fight the biggest war the world has ever seen. This section provides insights into what the war meant in Kiveton and Wales, for both those who went to fight and the men and women who fought on the 'home front'.