The winter put a stop to military operations. All had hitherto gone well. But the real tug of war was still to come. It was easy to foresee that the year 1757 would be a memorable era in the history of Europe.
The King’s scheme for the campaign was simple, bold, and judicious. The Duke of Cumberland with an English and Hanoverian array was in Western Germany, and might be able to prevent the French troops from attacking Prussia. The Russians, confined by their snows, would probably not stir till the spring was far advanced. Saxony was prostrated. Sweden could do nothing very important. During a few months Frederic would have to deal with Austria alone. Even thus the odds were against him. But ability and courage have often triumphed against odds still more formidable.
Early in 1757 the Prussian army in Saxony began to move. Through four defiles in the mountains they came pouring into Bohemia. Prague was the King’s first mark; but the ulterior object was probably Vienna. At Prague lay Marshal Brown with one great army. Daun, the most cautious and fortunate of the Austrian captains, was advancing with another. Frederic determined to overwhelm Brown before Daun should arrive. On the sixth of May was fought, under those walls which, a hundred and thirty years before, had witnessed the victory of the Catholic league and the flight of the unhappy Palatine, a battle more bloody than any which Europe saw during the long interval between Malplaquet and Eylau. The King and Prince Ferdinand of Brunswick were distinguished on that day by their valour and exertions. But the chief glory was with Schwerin. When the Prussian infantry wavered, the stout old marshal snatched the colours from an ensign, and, waving them in the air, led back his regiment to the charge. Thus at seventy-two years of age he fell in the thickest battle, still grasping the standard which bears the black eagle on the field argent. The victory remained with the King; but it had been dearly purchased. Whole columns of his bravest warriors had fallen. He admitted that he had lost eighteen thousand men. Of the enemy, twenty-four thousand had been killed, wounded, or taken.
Some of the defeated army was shut up in Prague. Part fled to join the troops which, under the command of Daun, were now close at hand. Frederic determined to play over the same game which had succeeded at Lowositz. He left a large force to besiege Prague, and at the head of thirty thousand men he marched against Daun. The cautious Marshal, though he had a great superiority in numbers, would risk nothing. He occupied at Kolin a position almost impregnable, and awaited the attack of the King.