THREE: THREE:Austria was rapidly marshaling her hosts, and pouring them through the defiles of the mountains to regain Silesia. Her troops still held three important fortresses��Neisse, Brieg, and Glogau. These places were, however, closely blockaded by the Prussians. Though it was midwinter, bands of Austrian horsemen were soon sweeping in all directions, like local war tempests borne on the wings of the wind. Wherever there was an unprotected baggage-train, or a weakly-defended post, they came swooping down to seize their prey, and vanished as suddenly as they had appeared. Their numbers seemed to be continually increasing. All the roads were swept by these swarms of irregulars, who carefully avoided any serious engagement, while they awaited the approach of the Austrian army, which was gathering its strength to throw down to Frederick the gauntlet on an open field of battle.