Within a day or two they were in a fight at Las Guasimas. It was a confusing business, advancing through the jungle and fired at by an enemy they could not see. The Rough Riders lost eight men killed and thirty-four wounded. The Spaniards were using smokeless powder, then rather a new thing in war. Two of our regiments at Santiago were still using black powder rifles, and the artillery used black powder, which by its smoke showed the enemy just where they were. Our artillery was always silenced or driven off, because this country had been so neglectful of its Army and its men as to let poor, old backward Spain get better guns, and more modern ammunition than ours. That never should happen with a rich, progressive country like ours. A few days later came the fight at San Juan. Colonel Wood had been put in command of the brigade, so Roosevelt led the regiment of Rough Riders. It was a fearfully hot day; many men dropped from exhaustion. The regular regiments of cavalry, together with the Rough Riders, all fighting on foot, moved forward against the low hills on which were the Spaniards in block-houses or trenches. For some while they were kept waiting in reserve, taking what shelter they could from the Mauser bullets, which came whirring through the tall jungle grass. This is the most trying part of a fight. It is all right when at last you can charge your enemy and come to close quarters with him, but to lie on the ground under fire, unable to see anybody to fire upon, is the worst strain upon the soldiers' nerves. As one after another is shot, the officers begin to watch the men closely to see how they are standing it. Roosevelt received a trifling wound from a shrapnel bullet at the beginning of the fight. Later his orderly had a sun-stroke, and when he called another orderly to take a message, this second man was killed as he stood near, pitching forward dead at Roosevelt's feet. Finally came the order to charge. Roosevelt was the only mounted man in the regiment. He had intended to go into the fight on foot, as he had at Las Guasimas, but found that the heat was so bad that he could not run up and down the line and superintend things unless he was on horseback. When he was mounted he could see his own men better, and they could see him. So could the enemy see him better, and he had one or two narrow escapes because of being so conspicuous.