Personal Memoirs of Ulysses s. Grant

At last the preparations were complete and orders were issued for the advance to begin on the 8th of March. General Taylor had an army of not more than three thousand men. One battery, the siege guns and all the convalescent troops were sent on by water to Brazos Santiago, at the mouth of the Rio Grande. A guard was left back at Corpus Christi to look after public property and to take care of those who were too sick to be removed. The remainder of the army, probably not more than twenty five hundred men, was divided into three brigades, with the cavalry independent. Colonel Twiggs, with seven companies of dragoons and a battery of light artillery, moved on the 8th. He was followed by the three infantry brigades, with a day's interval between the commands. Thus the rear brigade did not move from Corpus Christi until the 11th of March. In view of the immense bodies of men moved on the same day over narrow roads, through dense forests and across large streams, in our late war, it seems strange now that a body of less than three thousand men should have been broken into four columns, separated by a day's march.

General Taylor was opposed to anything like plundering by the troops, and in this instance, I doubt not, he looked upon the enemy as the aggrieved party and was not willing to injure them further than his instructions from Washington demanded. His orders to the troops enjoined scrupulous regard for the rights of all peaceable persons and the payment of the highest price for all supplies taken for the use of the army.