World War was on the cards when Adolf Hitler was in power. It started on September 1, 1939 with a historic moment when Poland was being invaded by Germany. It was a gamble as the German army was not at full strength and the German Economy was still locked. Fire opened on September 1 on the polish borders, which was the first military engagement.
This was a risk because Hitler’s idea of invading Poland was already known to the opposition as the general of Adolf Hitler had leaked this news to Britain and France.