As soon as night came he divided his army into three columns. Sandoval was appointed leader of the advance. He himself led the centre column, and Velasquez de Leon, a near relative of the governor of Cuba, brought up the rear. The army set out in the stillness of midnight. Noise of any kind was carefully avoided and the falling rain seemed to favor them. For a time not a trace of counter preparation was discovered and at last they reached the causeway leading to Tacuba which had been selected for two reasons by Cortes. In the first place, it was the shortest, and in the second, he had hopes that the Mexicans might have neglected to cut it, as it was in an entirely different direction from that which the Spaniards had taken when they came. But this hope was soon dissipated, for when they reached the spot, they found it cut. With the help of the floating bridge, they attempted to make the crossing, but before it was accomplished the terrible battle cry of the enemy was heard, announcing death and destruction on every hand. The lake was suddenly alive with canoes. The beginning of the battle was marked by a terrible storm of arrows and stones. The place, the darkness, and the desperation of the assailants made it one of the most deadly in history. The Spaniards were caught upon a narrow pier between the first and second openings. They now sought to raise their bridge and take it to the second, but the weight of the heavy guns had forced it between the stones so closely that they could not get it loose. All their exertions were in vain and they were now so fiercely attacked in front, in the rear, and on both sides that no hope was left, either of victory or escape. The Mexicans fought with desperation, determined either to die themselves or destroy the enemies of their fatherland. The Spaniards strove with all their skill and might to clear the way, but, as often as they secured a passage with the sword, fresh fighters took the place of the slain. They rushed upon them in such dense masses that they could not use their fire-arms. At last their strength was exhausted. They could no longer withstand this constantly increasing multitude. The advance gave away and there was universal confusion. Infantry and cavalry, friends and foes, were huddled together so closely that they fought blindly and without knowing, in the darkness, whether they struck friend or foe.