acquaintance of Tresckow) the army attaché of Adolf Hitler, when he was visiting Koblenz, who informed Hitler of the affair on 2 February. Having found the Halder plan unsatisfactory from the start, Hitler ordered a change of strategy on 13 February in accordance with Manstein's thinking, after having heard only a rough outline. Manstein was invited to the Reich Chancellery in Berlin to meet Hitler on 17 February, in the presence of Alfred Jodl and Erwin Rommel. Though Hitler felt an immediate antipathy against Manstein for being arrogant and aloof, he listened silently to his exposition and was impressed by Manstein's thinking. Hitler remarked after Manstein had left, "Certainly an exceptionally clever fellow, with great operational gifts, but I don't trust him". Plan Manstein took no more part in the planning and returned to eastern Germany. Halder had to revise the plan again, which became N°4, . The new plan conformed to Manstein's thinking in that Army Group A would provide the main thrust of the invasion through the Ardennes in southern Belgium. After crossing the Meuse River between Namur and Sedan, Army Group A would turn north-west towards Amiens, as Army Group B executed a feint attack in the north, to lure the Allied armies forward into Belgium and pin them down. The revision was a substantial change in emphasis, in which Halder no longer envisaged a simultaneous secondary attack to the west but made it the main effort (). The dash for Abbeville was removed, river crossings were to be forced by infantry and there would be a long period of consolidation by a large number of infantry divisions crossing into the bridgeheads. The armoured divisions would then advance together with the infantry, not in an independent operational penetration. Halder rejected the idea of forestalling the French with a simultaneous attack to the south to occupy the assembly areas that the French would use for a counter-offensive. Battle Five panzer divisions of advanced through the Ardennes; XIX Panzer Corps with three panzer divisions on the southern flank towards Sedan, against the French Second Army. The XLI Panzer Corps with two panzer divisions on the northern flank, advanced towards Monthermé, against the French Ninth Army (General André Corap). XV Corps moved through the upper Ardennes towards Dinant, with two panzer divisions, as a flank guard against a counter-attack from the north. From 10 to 11 May, XIX Panzer Corps