Why Did War Break Out In 1939? Introduction There wasn't just one main cause or reason for the outbreak of war in 1939. In fact, it was the build up of many different factors that led to the Second World War. The following are the factors that led to war: The rearmament of Germany German rearmament began after Hitler left the 1932-34 Geneva Disarmament Conference. He stated that as the victors of WWI would not disarm to …showed first 75 words of 1172 total…

…showed last 75 words of 1172 total…Minister's eyes. But because Hitler was able to carry out his earlier plans with no problems, he believed that Britain still wouldn't act and was surprised by the declaration of war. Chamberlain finally realised that Hitler was up to no good and surprised Hitler by engaging him with war. In conclusion, war was inevitable but was delayed by Chamberlain's naivety, and so happened in September 1939, despite Hitler smashing the treaty of Versailles over 4 years previously.