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> how they utilized it
Initially there was little coordination between production and military doctrine and planning, the industry put out weapons and the generals figured out what to do with them. In 1940 Von Manstein devised a brilliant plan of maneuver and encirclement maneuver but it was "makeshift", years of military production up to that point had not been specifically geared to carrying out what he had in mind. Once it proved successful then there was finally a strategic synthesis and the factories now focused on providing the means to carry out more campaigns of this sort.