victory was a result of Hitler's military genius; Hitler said, After the war, Halder claimed he was the main instigator of the German plan, supporting this with the fact that he had begun to consider changing the main axis to Sedan as early as September 1939 and that Manstein's original proposal was too traditional. The Manstein Plan is often seen as either the result of or the cause of a mid-20th century Revolution in military affairs. In the former hypothesis, expounded by J. F. C. Fuller and Basil Liddell Hart immediately after the events, the Manstein Plan is presented as a result of the evolution of German military thinking since the First World War by Hans von Seeckt and Guderian, adopting the ideas of Fuller or Liddell Hart. If true, an explicit Blitzkrieg doctrine would have been established by 1939 and been the basis of the plan for the Invasion of Poland; the Manstein Plan would have been its most spectacular implementation. Blitzkrieg theory would have been reflected in the organisation and equipment of the army and and would have been radically different from those of France, Britain and the Soviet Union, except for the contributions of individuals like Mikhail Tukhachevsky, Charles de Gaulle, Fuller and Liddell Hart. That the earliest plans by Halder or Manstein and the final plan by Halder did not conform to this doctrine is an anomaly, to be explained by circumstances. In the latter hypothesis, favoured by Robert A. Doughty and Karl-Heinz Frieser, the Manstein Plan was a return to the principles of 19th century (war of manoeuvre), adapted to modern technology by a sudden and unexpected departure from established German thinking, through the elements provided and executed by Guderian. The influence of Fuller and Liddell Hart in Germany was limited and exaggerated by them after the war; no explicit Blitzkrieg doctrine can be found in pre-war German army records. German tank production had no priority and plans for the German war economy were based on the premise of a long war, not a swift victory. The hypothesis allows for a gradual adoption during the thirties of technologically-advanced military equipment and integration into existing thought, familiar to all the great powers prior to 1940, differences being variations on a theme. The invasion of Poland was not "Blitzkrieg but an annihilation battle fought according to " (annihilation theory). The lack of Blitzkrieg elements in the plans