No sooner were we on the crest than the Spaniards from the line of hills in our front, where they were strongly intrenched, opened a very heavy fire upon us with their rifles. They also opened upon us with one or two pieces of artillery, using time fuses which burned very accurately, the shells exploding right over our heads.
On the top of the hill was a huge iron kettle, or something of the kind, probably used for sugar refining. Several of our men took shelter behind this. We had a splendid view of the charge on the San Juan block-house to our left, where the infantry of Kent, led by Hawkins, were climbing the hill. Obviously the proper thing to do was to help them, and I got the men together and started them volley-firing against the Spaniards in the San Juan block-house and in the trenches around it. We could only see their heads; of course this was all we ever could see when we were firing at them in their trenches. Stevens was directing not only his own colored troopers, but a number of Rough Riders; for in a melee good soldiers are always prompt to recognize a good officer, and are eager to follow him.
We kept up a brisk fire for some five or ten minutes; meanwhile we were much cut up ourselves. Gallant Colonel Hamilton, than whom there was never a braver man, was killed, and equally gallant Colonel Carroll wounded. When near the summit Captain Mills had been shot through the head, the bullet destroying the sight of one eye permanently and of the other temporarily. He would not go back or let any man assist him, sitting down where he was and waiting until one of the men brought him word that the hill was stormed. Colonel Veile planted the standard of the First Cavalry on the hill, and General Sumner rode up. He was fighting his division in great form, and was always himself in the thick of the fire. As the men were much excited by the firing, they seemed to pay very little heed to their own losses.
Suddenly, above the cracking of the carbines, rose a peculiar drumming sound, and some of the men cried, "The Spanish machine-guns!" Listening, I made out that it came from the flat ground to the left, and jumped to my feet, smiting my hand on my thigh, and shouting aloud with exultation, "It's the Gatlings, men, our Gatlings!" Lieutenant Parker was bringing his four gatlings into action, and shoving them nearer and nearer the front. Now and then the drumming ceased for a moment; then it would resound again, always closer to San Juan hill, which Parker, like ourselves, was hammering to assist the infantry attack. Our men cheered lustily. We saw much of Parker after that, and there was never a more welcome sound than his Gatlings as they opened. It was the only sound which I ever heard my men cheer in battle.