Frederick speedily concentrated all his strength at Bautzen, and strove to draw the Austrians into a battle; but in vain. The heights upon which they were intrenched, bristling with cannon, he could not venture to assail. After three weeks of impatient man?uvring, Frederick gathered his force of fifty thousand424 men close in hand, and made a sudden rush upon Bernstadt, about fifty miles to the east of Bautzen. Here he surprised an Austrian division, scattered it to the winds, seized all its baggage, and took a number of prisoners. He also captured the field equipage, coach, horses, etc., of General Nadasti, who narrowly escaped.