Cortes made the following arrangement of our land army for the investment of Mexico, distributing our forces in three separate divisions, under the respective commands of Alvarado, De Oli, and Sandoval, reserving to himself to act where his presence might be most necessary, and taking in the mean time the command of the fleet. Pedro de Alvarado, under whom I served, had 150 infantry, 30 cavalry, 18 musketeers and crossbow-men, and 8000 Tlascalans, and was ordered to take post at Tacuba, having three captains under his command, his brother Jorge de Alvarado, Pedro Guttierrez, and Andres de Monjara, having each a company of 50 infantry, with a third of the musketeers and crossbow-men, the cavalry being commanded by Alvarado in person.--Christoval de Oli commanded the second division, having under him Andres de Tapia, Francisco Verdugo, and Francisco de Lugo, with 175 infantry, 30 cavalry, 20 musketeers and crossbows, and 8000 of our Indian allies. This division was ordered to take post at Cuyoacan or Cojohuacan.--The third division, under the command of Gonzalo de Sandoval, who had under him captains Luis Marin and Pedro de Ircio, consisted of 150 infantry, 24 cavalry, 14 musketeers and crossbows, and above 8000 Indian warriors, was to take post at Iztapalapa. The division of Alvarado and De Oli were ordered to march from Tezcuco by the right, going round the northern side of the lake, and the third, under Sandoval, by the left, to the south end of the lake; and his march being much shorter, he was ordered to remain in Tezcuco until Cortes should sail out with the fleet[13].