Lieutenant-Colonel Baldwin's account of the part his regiment took in the assault upon San Juan is told about as follows: After the search for Lawton had been given up, the First and Tenth Cavalry were formed for attack on East Hill. "I was directed," he says, "to take a position to the right, behind the river bank, for protection. While moving to this position, and while there, the regiment suffered considerable loss. After an interval of twenty or thirty minutes I was directed to form line of battle in a partially open field facing toward the blockhouses and strong intrenchments to the north occupied by the enemy. Much difficulty was found on account of the dense undergrowth, crossed in several directions by wire fences. As a part of the cavalry division under General Sumner, the regiment was formed in two lines, the First Squadron under Major S.T. Norvell, consisting of Troops A, B, E and I, leading; the second line, under Major T.J. Wint, consisting of Troops C, F and G. Troop D having crossed farther down the river, attached itself to a command of infantry and moved with that command on the second blockhouse. The regiment advanced in this formation in a heavy converging fire from the enemy's position, proceeding but a short distance when the two lines were united into one. The advance was rapidly continued in an irregular line toward the blockhouses and intrenchments to the right front. During this advance the line passed some troops of the First Cavalry, which I think had previously been formed on our right. Several losses occurred before reaching the top of the hill, First Lieutenant William H. Smith being killed as he arrived on its crest. The enemy having retreated toward the northwest to the second and third blockhouses, new lines were formed and a rapid advance was made upon these new positions. The regiment assisted in capturing these works from the enemy, and with the exception of Troops C and I, which in the meantime had joined the First Volunteer Cavalry, then took up a position to the north of the second blockhouse, remaining there all night." Major Norvell, who commanded the First Squadron of the Tenth Cavalry, which consisted of Troops A, B, E and I, gives the following account of the experiences of July 1st: