Maitre Georges, who was acting as the military adviser of the pasha, saw at once that the weakest point of the defence was Fort St. Nicholas, at the extremity of the mole along the neck of land dividing the outer from the inner port. At a short distance away, on the opposite side of the port, stood the church of St. Anthony, and in the gardens of the church a battery was at once erected. The garden was but three hundred yards from St. Nicholas, and the danger that would arise from the construction of the battery was at once perceived, and an incessant fire opened upon it from the guns on the wall round the grand master's palace. Numbers of the workmen were killed, but the erection of the battery was pushed on night and day, and ere long three of the immense cannon that had been brought from Constantinople,--where sixteen of them had been cast under the direction of Maitre Georges--were placed in position. These cannon were eighteen feet in length, and carried stone balls of some twenty-six inches in diameter. Before these were ready to open fire, Gervaise had entirely regained his health and strength. The grand master, being unwilling to appoint him to a separate command over the heads of knights many years his senior, had attached him to his person in the capacity of what would now be called an aide-de-camp. “I know, Gervaise, that I can rely upon your coolness and discretion. I cannot be everywhere myself, and I want you to act as my eyes in places where I cannot be. I know that the knights, so far as bravery and devotion are concerned, will each and every one do his best, and will die at their posts before yielding a foot; but while fighting like paladins they will think of naught else, and, however hardly pressed, will omit to send to me for reinforcements. Nay, even did they think of it, they probably would not send, deeming that to do so would be derogatory, and might be taken as an act of cowardice. Now, it is this service that I shall specially look for from you. When a post is attacked, I shall, when my presence is required elsewhere, send you to represent me. I do not, of course, wish you to interfere in any way in the conduct of the defence, in which you will take such share as you can; but you are specially to observe how matters go, and if you see that the knights are pressed and in sore need of assistance to enable them to hold the post, you will at once bring the news to me, and I will hurry there with reinforcements.”