On the 29th of December, the Old Dessauer, with thirty-five thousand men, crossed the frontiers and entered Saxony. He marched rapidly upon Leipsic, and seized the town, from which a division of Rutowski’s army precipitately fled. Leopold found here quite a supply of commissary and ordnance stores. He also replenished his empty army-chest by levying a contribution of two hundred and fifty thousand dollars upon the inhabitants. Then, by a rapid march northeast to Torgo, on the Elbe, he captured another imperial magazine. Turning south, he pressed his troops along up the river to Myssen, which was within two days’ easy march of Dresden. Here there was a bridge across the Oder. Frederick was pushing his troops, by forced marches, from Hennersdorf, to effect a junction with Leopold at Myssen. Unitedly they were to fall upon Grüne and Rutowski at Dresden. In the mean time, also, Prince Charles, a despondent man, crushed by domestic woe and humiliating defeats, was moving, by not very energetic steps, to re-enforce the allied troops at Dresden. It was two o’clock in the afternoon of Sunday, December 12, when the banners of the Old Dessauer appeared before Myssen. The Saxon commander there broke down the bridge, and in the darkness of the night stole away with his garrison to Dresden. Leopold vigorously but cautiously pursued. As the allied army was near, and in greater force than Leopold’s command, it was necessary for him to move with much discretion. His march was along the west bank of the river. The ground was frozen and white with snow. On Wednesday morning, December 15, the advance-guard of the Prussians saw before them the allied army, thirty-five thousand strong, occupying a very formidable position. Marshal Grüne and General Rutowski had advanced a few miles north from Dresden to meet the Prussians. Their troops were drawn up in battle array, extending from the River Elbe on the east, to the village of Kesselsdorf on the west. A small stream, with a craggy or broken gully or dell, extended along their whole front. The southern ridge, facing the advancing Prussians, bristled with artillery. Some of the pieces were of heavy calibre. Leopold had only light field-pieces. In the cold of the winter morning the Old Dessauer carefully reconnoitred the position of his foes. Their batteries seemed innumerable, protected by earth-works, and frowning along a cliff which could only be reached by plunging into a gully and wading through a half-frozen bog. There was, however, no alternative but to advance or retreat. He decided to advance.