Through the fish tanks he led the way, followed by Princes Henry and Ferdinand. The whole division struggled through the mud, drove back the Austrians hastily brought up to oppose them, captured the battery, and poured into the gap; thereby cutting the Austrian army in two, and taking both halves in flank.

This was the deciding point of the battle. The Austrian right, already holding its own with difficulty, was crumpled up and forced to fall back hastily. The other half of the army, isolated by the irruption, threw itself back and endeavoured to make a fresh stand at spots defended by batteries and stockades.

But all was in vain. The Prussians pressed forward exultingly, the fresh troops leading the way. In spite of the confusion occasioned by the loss of their commanders, and of the surprise caused by the sudden breakup of their line by the inrush of Mannstein and the princes, the Austrians fought stoutly. Four times they made a stand, but the Prussians were not to be denied. The Austrian guns that had been captured were turned against them and, at last giving way they fled for Prague, where some 40,000 of them rushed for shelter, while 15,000 fled up the valley of the Moldau.

Had it not been that an accident upset Frederick's calculations, the greater portion of the Austrians would have been obliged to lay down their arms. Prince Maurice of Dessau had been ordered to move with the right wing of Keith's army, 15,000 strong, to take up a position in the Austrian rear. This position he should have reached hours before, but in his passage down a narrow lane, some of the pontoons for bridging the river were injured. When the bridge was put together, it proved too short to reach the opposite bank.

The cavalry in vain endeavoured to swim the river. The stream was too strong, and Frederick's masterly combination broke down; and the bulk of the Austrians, instead of being forced to surrender, were simply shut up in Prague with its garrison.

The battle of Prague was one of the fiercest ever fought. The Austrian army had improved wonderfully, since the Silesian war. Their artillery were specially good, their infantry had adopted many of the Prussian improvements and, had Browne been in sole command, and had he escaped unwounded, the issue of the day might have been changed. The Prussians lost 12,500 men, killed and wounded; the Austrians, including prisoners, 13,300. Frederick himself put the losses higher, estimating that of the Austrians at 24,000, of whom 5000 were prisoners, that of the Prussians at 18,000, "without counting Marshal Schwerin, who alone was worth about 10,000."

It is evident that the king's estimate of the loss of the Austrians must have been excessive. They had the advantage of standing on the defensive. The Prussian guns did but comparatively little service, while their own strong batteries played with tremendous effect upon the Prussians, struggling waist deep in the mud. There can therefore be little doubt that the latter must have suffered, in killed and wounded, a much heavier loss than the Austrians.

Impassive as he was, and accustomed to show his feelings but little, Frederick was deeply affected at the loss of his trusted general, and of the splendid soldiers who had been so long and carefully trained; and even had Prague fallen, the victory would have been a disastrous one for him; for, threatened as he was by overwhelming forces, the loss of 5000 men, to him, was quite as serious as that of 20,000 men to the Confederates.

In Keith's army there had been considerable disappointment, when it became known that they were to remain impassive spectators of the struggle, and that while their comrades were fighting, they had simply to blockade the northern side of the city.

"You will have plenty of opportunities," the marshal said quietly to his aides-de-camp, on seeing their downcast look. "This war is but beginning. It will be our turn, next time. For it is a great task the king has set himself, in attempting to carry the strong position that the Austrians have taken up; and he will not do it without very heavy loss. Tomorrow you may have reason to congratulate yourselves that we have had no share in the business."