When the desired succor had arrived, he put his army in motion, intending to desolate the country and then retire.

But he had not advanced far, before he discovered the allied forces of Saxony and Suabia drawn up to oppose him.

Daunted for a moment, by this gallant host, he fell back upon the Elster.

The deep river prevented a farther retreat.

His position was protected by narrow and difficult approaches, and by a deep morass.