As a young man this valiant Pole had aided in the war for American independence. In 1792 he took part in the war for the defence of his native land. But he declared that there could be no hope of success unless the peasants were given their liberty. Hitherto they had been treated in Poland like slaves. It was with these despised serfs that this effort was made.

In 1794 the insurrection broke out. Kosciusko, finding that the country was ripe for revolt against its oppressors, hastened from Italy, whither he had retired, and appeared at Cracow, where he was hailed as the coming deliverer of the land. The only troops in arms were a small force of about four thousand in all, who were joined by about three hundred peasants armed with scythes. These were soon met by an army of seven thousand Russians, whom they put to flight after a sharp engagement.

The news of this battle stirred the Russian general in command at Warsaw to active measures. All whom he suspected of favoring the insurrection were arrested. The result was different from what he had expected. The city blazed into insurrection, two thousand Russians fell before the onslaught of the incensed patriots, and their general saved himself only by flight.

The outbreak at Warsaw was followed by one at Vilna, the capital of Lithuania, the Russians here being all taken prisoners. Three Polish regiments mustered into the Russian service deserted to the army of their compatriots, and far and wide over the country the flames of insurrection spread.

Kosciusko rapidly increased his forces by recruiting the peasantry, whose dress he wore and whose food he shared in. But these men distrusted the nobles, who had so long oppressed them, while many of the latter, eager to retain their valued prerogatives, worked against the patriot cause, in which they were aided by King Stanislaus, who had been subsidized by Russian gold.

To put down this effort of despair on the part of the Poles, Catharine of Russia sent fresh armies to Poland, led by her ablest generals. Prussians and Austrians also joined in the movement for enslavement, Frederick William of Prussia fighting at the head of his troops against the Polish patriot. Kosciusko had established a provisional government, and faced his foes boldly in the field. Defeated, he fell back on Warsaw, where he valiantly maintained himself until threatened by two new Russian armies, whom he marched out to meet, in the hope of preventing their junction.

The decisive battle took place at Maciejowice, in October, 1794. Kosciusko, though pressed by superior forces, fought with the greatest valor and desperation. His men at length, overpowered by numbers, were in great part cut to pieces or obliged to yield, while their leader, covered with wounds, fell into the hands of his foes. It is said that he exclaimed, on seeing all hopes at an end, "Finis Poloniæ!" In the words of the poet Byron, "Freedom shrieked when Kosciusko fell."

Warsaw still held out. Here all who had escaped from the field took refuge, occupying Praga, the eastern suburb of the city, where twenty-six thousand Poles, with over one hundred cannon and mortars, defended the bridges over the Vistula. Suwarrow, the greatest of the Russian generals, was quickly at the city gates. He was weaker, both in men and in guns, than the defenders of the city; but with his wonted impetuosity he resolved to employ the same tactics which he had more than once used against the Turks, and seek to carry the Polish lines at the bayonet's point.

After a two days' cannonade, he ordered the assault at daybreak of November 4. A desperate conflict continued during the five succeeding hours, ending in the carrying of the trenches and the defeat of the garrison. The Russians now poured into the suburb, where a scene of frightful carnage began. Not only men in arms, but old men, women, and children were ruthlessly slaughtered, the wooden houses set on fire, the bridges broken down, and the throng of helpless people who sought to escape into the city driven ruthlessly into the waters of the Vistula. In this butchery not only ten thousand soldiers, but twelve thousand citizens of every age and sex were remorselessly slain.