Hitler took credit for the concept and use of blitzkrieg. Germany launched its attack on poland, and it was a quick and easy win. Thus these two were combined efforts of hitler and stalin. May 1940 germany attacks norway, and then denmark, holland, and belgium. Hitler was interested in norway because it was close to the british isles (he could establish military posts), and he had a strong interest in developing military warfare. Norway was a prime location for the germans to practice and rehearse war no one would know. Belgium has always been regarded as a neutral country, and everyone reacted when. Now that all of the troops (of the allies) are out of the way, hitler attacks france. Germany had new equipment, strategies, and leadership, for which. Fall 1940 mussolini attacks france and greece. The south of france was remote from paris and versailles. In keeping with his ancient roman/greek utopia, he invades greece.