By the 23rd he was at Bonn with the cavalry, his brother Churchill following with the infantry. Thence the heavy baggage and the artillery proceeded by water up the river to Coblentz, and when Coblentz was reached (upon the 25th of May) it was apparent that the Moselle at least was not his objective, for on the next day, the 26th, he crossed both that river and the Rhine with his army, and continued his march up the right bank of the Rhine. But this did not mean that he might not still intend to carry the war into Alsace. He was at Cassel, opposite Mayence, three days after leaving Coblentz; four days later the head of the column had reached the Neckar at Ladenberg, where bridges had already been built by Marlborough's orders, and upon the 3rd of June the troops crossed over to the further bank. Here was the decisive junction where Marlborough must show his hand: the first few miles of his progress south-eastward across the bend of the Neckar would make it clear that his object was not Alsace, but the Danube. He had announced to the Dutch and all Europe an attack upon the valley of the Moselle; that this was a ruse all could see when he passed Coblentz without turning up the valley of that river. The whole week following, and until he reached the Neckar, it might still be imagined that he meditated an attack upon Alsace, for he was still following the course of the Rhine. Once he diverged from the valley of this river and struck across the bend of the Neckar to the south and east, the alternative he had chosen of making the Upper Danube the seat of war was apparent. It is therefore at this point in his advance that we must consider the art by which he had put the enemy in suspense, and confused their judgment of his design. The first point in the problem for a modern reader to appreciate is the average rate at which news would travel at that time and in that place. A very important dispatch could cover a hundred miles and more in the day with special organisation for its delivery, and with the certitude that it had gone from one particular place to another particular place. But general daily information as to the movements of a moving enemy could not be so organised. We must take it that the French commanders upon the left bank of the Rhine at Landau, or upon the Meuse (where Villeroy was when Marlborough began his march), would require full forty-eight hours to be informed of the objective of each new move.