The First Division hospital of the Fifth Army-Corps was established in the field, about three miles east of Santiago, Wednesday, June 29. At that time it was in advance of the whole army, and had no other protection than a line of pickets thrown out toward the enemy's intrenchments. The site of the camp was a large, partly open glade, or field, on the floor of a wooded valley, which was bounded on the northeast, at a distance of three miles, by a range of mountains, and which extended to within a mile of Santiago. Through this valley ran the Siboney-Santiago road, nearly parallel with a brook which had its source in the mountains to the northward, and after being joined by a number of other brooks coming from the same direction, fell into the sea through a notch in the coast rampart three or four miles east of Morro Castle. The glade, or field, in which the hospital camp stood was one of a series of similar glades stretching away to the northeast toward the base of the mountains, and resembling a little in outline and topographical arrangement the openings known as "barrens" in the forests of Nova Scotia. In every other direction except the one taken by this line of glades the camp was bounded by a dense tropical jungle through which the Siboney-Santiago road had been cut. The opening occupied by the hospital camp was covered with a dense growth of high wild grass, shaded here and there by small clumps of pinon-bushes, with a few larger trees of kinds to me unknown. South and southwest of the camp lay a tropical forest which I did not undertake to explore, but which our pickets said was so wild and so tangled with vines and creepers as to be almost impenetrable. The site of the camp between the road and the brook was well chosen, and it was, perhaps, as satisfactory a place for a hospital as could have been found in that vicinity. The hospital, when I arrived, consisted of three large tents for operating-tables, pharmacy, dispensary, etc.; another of similar dimensions for wounded officers; half a dozen small wall-tents for wounded soldiers; and a lot of "dog-kennels," or low shelter-tents, for the hospital stewards, litter-bearers, and other attendants. I do not know how many ambulances the hospital had for the transportation of wounded from the battle-line, but I saw only two, and was informed by Dr. Godfrey that only three had been brought from Tampa. Fifty or more had been sent to that port for the use of the Fifth Army-Corps, but had been left there, by direct order of General Shafter, when the expedition sailed. The hospital staff at the beginning of the first day's battle consisted of five surgeons: namely, Major M. W. Wood, chief surgeon of the First Division; Major R. W. Johnson, in command of the First Division hospital; Dr. Guy C. Godfrey, Dr. H. P. Jones, and Dr. F. J. Combe.