Two fortified camps were accordingly formed, too strong to be attacked even by desperate men; and then the siege proper commenced. After careful survey, Titus resolved to assault the triple wall on the north side of the city; which was, after all, less difficult to surmount than the mighty ramparts, reared by nature and aided by art, which the other parts of the defences presented. He accordingly constructed three great walls, cutting down for the purpose all the timber which was to be found near the city. On these he set up his military engines, which hurled huge stones and darts against the defenders of the wall, and then set the rams at work to batter it down. Towers were also erected, sheeted with iron, so as to be proof against fire, and overtopping the defences, thus rendering it impossible for the defenders to man the ramparts. After a desperate attempt to set the works of the besiegers on fire, the Jews were obliged to abandon the outer wall, and fall back on the second. This was captured and thrown down in a much shorter space of time than had been spent on the reduction of the former. But the success was not obtained without more than one repulse, and heavy loss; and the defences still to be surmounted appeared so formidable, garrisoned as they were by men whom nothing could daunt or weary out, that Titus resolved to make a display under their eyes of his whole military array, in the hope that by showing the impossibility of ultimate resistance, he might induce them to surrender. He caused all his troops to pass in review before him, in sight of the city, all arrayed in their complete accoutrements and observing the strictest form of military discipline—a splendid but terrible sight to men who knew that it was impossible for them to offer effectual resistance. But Simon, and John, and their fierce followers knew also that they had offended too deeply for forgiveness; they looked sternly and gloomily on, but made no sign; nor would they reply to Josephus, when soon afterwards he offered his intercession. Titus saw that all efforts at conciliation were vain, and the last scene of the fearful tragedy began.