Strategopulus into Thrace it was with instructions that he was not to attack the city. He had with him only 800 men, but as he passed through the country behind Constantinople the Greek settlers (Volunteers, as they are called, Θεληματάριοι), who had friends in the city, flocked to him, and urged that he would never have a better chance of capturing it than at that time. The last detachment of troops which had come from France had left the city, with the Venetian fleet, upon an expedition into the Black Sea to capture Daphnusia. Constantinople might be surprised in their absence. In spite of the imperial orders, the chance was too good to be missed. He brought his men to the neighbourhood of the capital, and hid them near the Holy Well of Baloukli, situated at about half a mile from the Gate of the Fountain,^[1] one of the important entrances into the city through the landward walls. His volunteers had not deceived him when they stated that they had friends in the city. Probably every Greek was a secret sympathiser.

George Acropolitas, who died in 1282, and whose account, therefore, must have been written while the events were fresh in his memory, gives the most trustworthy version of what happened. He says: 'But as Strategopulus had some men near him who had come from the city and were well acquainted with all that had passed there, from whom he learned that there was a hole in the walls of the city through which an armed man could easily pass, he lost no time and set to work. A man passed through this hole; another followed, then others, until fifteen, and perhaps more, had got into the city. But, as they found a man on the walls on guard, some of them mounted the wall and, taking him by the feet, threw him over. Others having axes in their hands broke the locks and bolts of the gates, and thus rendered the entry easy for the army. This is how the Cæsar Strategopulus, and all the men he had with him, Romans and Scythians (for his army was composed of these