have been far from certain if the original plan had been followed. Determining the exact nature of the causal connection between the incident and the change in strategy has however proven to be problematic. In the more traditional account of events, the incident caused Hitler to ask for a drastic change of strategy. He told Jodl that "the whole operation would have to be built on a new basis in order to secure secrecy and surprise." The Belgians felt obliged to tell the Germans that they had the attack plan. When Joachim von Ribbentrop, Germany's Foreign Minister, retorted that it was out of date, he would then have been more truthful than he intended. In reaction to Hitler's demand the German High Command would have gone on a search for an alternative, finally finding it in the proposals of General Erich von Manstein, the former Chief of Staff of the German Army Group A, who for some months had been championing a new concept: instead of being committed to the attack detailed in the captured documents, whose principal thrust was on Belgium's north-eastern frontier, the German Panzer Divisions were to be concentrated further south. Jodl recorded on 13 February that Hitler concurred, referring to the Mechelen Incident: "We should then attack in the direction of Sedan," Hitler told Jodl. "The enemy is not expecting us to attack there. The documents held by the Luftwaffe officers who crash landed have convinced the enemy that we only intend to take over the Dutch and Belgian coasts." Within days of this discussion Hitler had personally talked to Von Manstein and the Führer had given it the green light. The plan that had caused so much mayhem when it was captured by the Belgians in 1940 was replaced. However, the importance of the incident has also been vehemently denied. Hitler was already hesitant about the original plan from its very beginning. The postponement was one of many and even on this occasion more to be attributed to the weather conditions than to the disclosure of the content of the documents. As the plan was rather traditional and predictable, no fundamental secrets were compromised and as such there was no direct need for a change. Hitler's demand for surprise referred not to an unpredictable new strategy but to a shortened approach and concentration phase, so that a tactical surprise could be gained before the enemy