The mountain range upon the south, which separated Silesia from the realms of the Queen of Hungary, was three or four hundred miles long, with some twenty defiles practicable for the passage of troops. The French minister Valori urged Frederick to guard these passes. This was impossible; and the self-confidence of the Prussian king is revealed in his reply: “My friend, if you wish to catch the mouse, you must not shut the trap, but leave it open.” The latter part of May, Frederick, in his head-quarters at Frankenstein, learned that an Austrian army under Prince Charles, and a Saxon army under the Duke of Weissenfels, in columns, by strict count seventy-five thousand strong, had defiled through the passes of the Giant Mountains, and entered Silesia near Landshut. Day after day he ascended an eminence, and, with his glass, anxiously scanned the horizon, to detect signs of the approach of the foe. On Thursday morning, June 3, an immense cloud of dust in the distance indicated that the decisive hour was at hand. As this magnificent army entered upon the smooth and beautiful fields of Southern Silesia they shook out their banners, and with peals of music gave expression to their confidence of victory. The Austrian officers pitched their tents on a hill near Hohenfriedberg, where they feasted and drank their wine, while, during the long and beautiful June afternoon, they watched the onward sweep of their glittering host. “The Austrian and Saxon army,” writes an eye-witness, “streamed out all the afternoon, each regiment or division taking the place appointed it; all the afternoon, till late in the night, submerging the country as in a deluge.” Far away in the east the Austrian officers discerned a Prussian column of observation, consisting of about twelve thousand horse and foot, wending along from hollow to height, their polished weapons flashing back the rays of the afternoon sun. Frederick, carefully examining the ground, immediately made arrangements to bring forward his troops under curtain of the night for a decisive battle. His orderlies were silently dispatched in all directions. At eight o’clock the whole army was in motion. His troops were so concentrated that the farthest divisions had a march of only nine miles. Silently, not a word being spoken, not a pipe being lighted, and all the baggage being left behind, they crossed the bridge of the Striegau River, and, deploying to the right and the left, took position in front of the slumbering allied troops. [Illustration: BATTLE OF HOHENFRIEDBERG, JUNE 4, 1745. _a a. Austrian Army. b. Prince Weissenfels. c c. Prussian Army. d. Dumoulin. e. Gesler’s Dragoons._]