During this season of disaster the Austrian and Prussian commanders left behind to guard the route contrived to spare their troops. Schwarzenberg, the Austrian commander, retreated towards Warsaw and left the Russian armies free to act against the French. The Prussians, who had been engaged in the siege of Riga, might have covered the fleeing host; but York, their commander, entered into a truce with the Russians and remained stationary. They had been forced to join the French, and took the first opportunity to abandon their hated allies. A place of safety was at length reached, but the grand army was represented by a miserable fragment of its mighty host. Of the half-million who crossed the Russian frontier, but eighty thousand returned. Of those who had reached Moscow, the meagre remnant numbered scarcely twenty thousand in all. _THE DEATH-STRUGGLE OF POLAND._ The French revolution of 1830 precipitated a similar one in Poland. The rule of Russia in that country had been one of outrage and oppression. In the words of the Poles, "personal liberty, which had been solemnly guaranteed, was violated; the prisons were crowded; courts-martial were appointed to decide in civil cases, and imposed infamous punishments upon citizens whose only crime was that of having attempted to save from corruption the spirit and the character of the nation." On the 29th of November the people sprang to arms in Warsaw and the Russians were driven out. Soon after a dictator was chosen, an army collected, and Russian Poland everywhere rose in revolt. It was a hopeless struggle into which the Polish patriots had entered. In all Europe there was not a hand lifted in their aid. Prussia and Austria stood in a threatening attitude, each with an army of sixty thousand men upon the frontiers, ready to march to the aid of Russia if any disturbance took place in their Polish provinces. Russia invaded the country with an army of one hundred and twenty thousand men, a force more than double that which Poland was able to raise. And the Polish army was commanded by a titled incapable, Prince Radzivil, chosen because he had a great name, regardless of his lack of ability as a soldier. Chlopicki, his aide, was a skilled commander, but he fought with his hands tied. On the 19th of February, 1831, the two armies met in battle, and began a desperate struggle which lasted with little cessation for six days. Warsaw lay in the rear of the Polish army. Behind it flowed the Vistula, with but a single bridge for escape in case of defeat. Victory or death seemed the alternatives of the patriot force. [Illustration: RUSSIAN PEASANTS.]