A J P Taylor in his book "The Origins of the Second World War" writes,
"Hitler never intended a major war and at most was prepared for only a limited war against Poland."
"In 1938-39, the last peacetime years, Germany spendt on armaments about 15 percent of her gross national product. The British proportion was almost exactly the same. German expenditure on armaments was actually cut down after Munich and remained on this lower level, so that british production of aeroplanes, for example, was way ahead of Germany by 1940. When the war broke out in 1939, Germany had 1,450 modern fighter planes and 800 bombers; Great Britain and France had 950 fighters and 1,300 bombers. The German had 3,500 tanks; Great Britain and France had 3,850. These numbers do not suggest that Germany had planned and prepared a great war that they started in 1939."
"One of Hitler's Generals, Keitel, wrote in his diary about the German-Italian military talks in April 1939, which were initiated after Italian pressure. It turned out that the Italians insisted on to tell that they could only be ready for war earlist in 1942. The German representatives agreed with them."
Hitler attacked Poland in September 1939.
Did Hitler really intend a limited war against Poland?
What made Hitler invade Poland without expecting a war like Great War(ww1)?