6. On June 11, the Prussian staff learned that of seven Austrian army corps destined to operate against Prussia six were in Moravia, not in Bohemia, as had been supposed. The inference was, that the Austrians contemplated advancing upon Breslau by way of Neisse, for which movement the data obtained showed that they would be able to cross the Silesian border with five or six army corps by about June 19. To meet this invasion, if it should take place, the second army was moved to the river Neisse, facing south, and was reinforced by the guard corps from Berlin, and by the first corps, moved originally from East Prussia by rail to Görlitz, and now by marching transferred from the first army to the second. At the same time the first army continued its eastward march as far as Görlitz, where it would be near enough to reach Breslau as soon as the Austrians, if they should really invade Silesia, or, if not required in that direction, could be moved readily into either Saxony or Bohemia. These movements were effected by June 19. The Elbe army was also to be moved to the east, to join the first army, but its most convenient route from Torgau to Görlitz lay through Dresden. While the changes just described were in the course of execution, the political situation also had changed. The hostile resolution of the diet on June 14 enabled the king to make up his mind. On June 15 war was declared against Saxony. On the 16th the Elbe army crossed the border; on the 18th occupied Dresden; and on the 19th, connection having been established with the first army, now about Görlitz, was placed under the command of Prince Frederick Charles. This prince concentrated the first army to the south of Görlitz, on the confines of Saxony and Silesia, close to the Bohemian border, while the Elbe army from Dresden rapidly closed up to his right flank. The intention was that both should advance as one army into Bohemia, and move, with the left wing skirting the foot of the Giant Mountains, to meet the second army. There had been no sign of an Austrian attack on Silesia, so the Crown Prince was ordered to prepare for a march westward into Bohemia to meet his cousin. On the 19th he was to send one corps in advance to Landshut, still keeping the rest of his force on the Neisse ready to face either south or west. A day or two later two more of his corps were withdrawn to the mountains, a single corps only remaining on the Neisse, and much trouble being taken to deceive the Austrians into the belief that the whole army was still there and was about to march towards Moravia. This was the position of both Prussian armies on June 22, when the telegram already quoted ordered them to cross the Bohemian frontier and to try to effect their union about Gitschin. [Illustration: Sketch map 3--THE OPENING MOVEMENTS OF THE CAMPAIGN OF 1866.]