Just at this period, the new king of Denmark, Frederick IV. entered into an alliance with the czar and the king of Poland, against Charles, the young king of Sweden, who seemed in no condition to withstand their united forces. Patkul had the satisfaction of besieging the Swedes in Riga, the capital of Livonia, and directing the attack in quality of major-general. The czar marched near eighty thousand men into Ingria. It is true, that, in this numerous army, he had not more than twelve thousand good soldiers, being those he had disciplined himself; namely, the two regiments of guards, and some few others, the rest being a badly armed militia, with some Cossacks, and Circassian Tartars; but he carried with him a train of a hundred and forty-five pieces of cannon. He laid siege to Narva, a small town in Ingria, that had a very commodious harbour, and it was generally thought the place would prove an easy conquest. Sept.] It is known to all Europe, how Charles XII. when not quite eighteen years of age, made head against all his enemies, and attacked them one after another; he entered Denmark, put an end to the war in that kingdom in less than six weeks, sent succours to Riga, obliged the enemy to raise the siege, and marched against the Russians encamped before Narva, through the midst of ice and snow, in the month of November. The czar, who looked upon Narva as already in his possession, was gone to Novogorod, (Nov. 18,) and had taken with him his favourite, Menzikoff, then a lieutenant in the company of bombardiers, of the Preobrazinski regiment, and afterwards raised to the rank of field-marshal and prince; a man whose singular fortunes entitle him to be spoken of more at large in another place. Peter left the command of the army, with his instructions for the siege, with the prince of Croi; whose family came from Flanders, and who had lately entered into the czar's service.[57] Prince Dolgorouki acted as commissary of the army. The jealousy between these two chiefs, and the absence of the czar, were partly the occasion of the unparalleled defeat at Narva.