Generaloberst Heinz Guderian, Generalinspekteur der Panzertruppen, making a speech to an assembly of tank crews while standing on the engine deck of a Sturmgeschütz. Initially he had vehemently opposed the introduction of the type, but by 1943 he was forced to realize that the Sturmgeschütz was vital if the combat strength of his armoured forces was to be maintained. (Historyfacts)