Saint Ruth chose his position with great skill. His camp extended more than two miles, along a range of hills called the heights of Kilcomeden. His right was protected by a rivulet, and by hills and marshes. On his left was a deep glen. Beyond this, along his whole front, a vast bog extended, in most places impassable for horse or foot. On the borders of the bog, on the left, stood the ruins of the little castle of Aughrim, occupying the only spot of firm ground which led to the camp. To pass the bog at this point, it was necessary to go close by the castle wall, where there was a broken path only wide enough for two men to pass abreast. The passage on the right of the bog was more open, but it was marshy and unsafe. This position was much stronger than that which the Irish had held at the battle of the Boyne, and whereas, on that occasion, they had been very inferior in numbers to their assailants, they were now superior by some regiments in number. In the point of artillery the English had here, as at the Boyne, an overwhelming superiority. Ginckle moved forward slowly and with caution, halting on the river Suck until he had been joined by every available soldier in Ireland. On the morning of the 12th of July, the British army halted on the edge of the bog, that, like a great belt, encircled the Irish within it. The morning was foggy, and the mist did not clear off until towards noon. The Irish prepared for battle by having divine service performed at the head of their regiments, and Dr. Stafford, chaplain to the royal regiment of foot, and some other priests, passed through the ranks, urging upon the men their duty and obligation, as soldiers and Irishmen, to make every effort they could to rescue their country from the oppression of the Prince of Orange, and his army of foreigners. Ginckle, on his part, as at Athlone, distributed money among the troops, and promised them the plunder of the enemy's camp. As the day cleared up, the British army was put in motion, and a strong column advanced against the enemy's right, where stood the house and grounds of Urachree, occupied by some Irish horse. A strong detachment of Danish cavalry headed the British column. They moved forward boldly, quickening their pace as they approached the Irish; but, on the latter charging them at full gallop, they wheeled about and rode off at once in disorder. Ginckle immediately ordered two hundred of Cunningham's dragoons, who were considered the best cavalry in the army, to advance and drive back the Irish horse. The dragoons advanced at a trot, but, seeing that the Irish quietly awaited their coming, they halted behind a hedge and awaited the arrival of the infantry. When these came up, the cavalry again moved forward. The Irish horse now fell back on a little hill in their rear, where a body of infantry were posted. They then faced to the front and charged, and broke the English dragoons, who retreated, as the Danes had done, in confusion.