Before daybreak on the 12th of December, 1806, a Greek Albanian named Konda, who had been in the Turkish service, and knew Belgrade well, but now fought in the Christian ranks, accompanied by six Servians, passed the ditch and palisades that surrounded the city of Belgrade, at a point between two posts so as not to be seen, and proceeding to one of the gates, fell upon the guard, which defended itself well. Four of the Servians were killed; but the Turks being at length overpowered, Konda and the two remaining Servians broke open the gate with an axe, on which a corps of Servians rushed in. The Turks being attracted to this point, Kara Georg passed the ditch at another place with a large force. After a sanguinary engagement in the streets, and the conflagration of many houses, the windows of which served as embrasures to the Turks, victory declared for the Christians, and the Turks took refuge in the citadel. The Servians, now in possession of the town, resolved to starve the Turks out of the fortress; and having occupied a flat island at the confluence of the Save and the Danube, were enabled to intercept their provisions; on which the Pasha capitulated and embarked for Widdin. The succeeding years were passed in the vicissitudes of a guerilla warfare, neither party obtaining any marked success; and an auxiliary corps of Russians assisted in preventing the Turks from making the re-conquest of Servia. Baron, subsequently Marshal Diebitch, on a confidential mission from the Russian government in Servia during the years 1810, 1811, writes as follows:[23] "George Petrovitch, to whom the Turks have given the surname of Kara or Black, is an important character. His countenance shows a greatness of mind, which is not to be mistaken; and when we take into consideration the times, circumstances, and the impossibility of his having received an education, we must admit that he has a mind of a masculine and commanding order. The imputation of cruelty and bloodthirstiness appears to be unjust. When the country was without the shadow of a constitution, and when he commanded an unorganized and uncultivated nation, he was compelled to be severe; he dared not vacillate or relax his discipline: but now that there are courts of law, and legal forms, he hands every case over to the regular tribunals." "He has very little to say for himself, and is rude in his manners; but his judgments in civil affairs are promptly and soundly formed, and to great address he joins unwearied industry. As a soldier, there is but one opinion of his talents, bravery, and enduring firmness."