In the east there was a fine green coming over the sky. No one out of the painter guild would have admitted it was green, even on the rack, but what I mean is that you could not approach it in any other way. A nice little adjutant went jangling by on a hard-trotting thoroughbred, his shoulders high and his seat low. My old disease began to take possession of me; I could fairly feel the microbes generate. Another officer comes clattering, with his orderly following after. The fever has me. We mount, and we are off, all going to stables. Out from the corrals swarm the troopers, leading their unwilling mounts. The horses are saying, “Damn the Colonel!” One of them comes in arching bounds; he is saying worse of the Colonel, or maybe only cussing out his own recruit for pulling his _cincha_ too tight. They form troop lines in column, while the Captains throw open eyes over the things which would not interest my friend from New York or the German nurse-girl. The two forward troops are the enemy, and are distinguished by wearing brown canvas stable-frocks. These shortly move out through the post, and are seen no more. Now comes the sun. By the shades of Knickerbocker's _History of New York_ I seem now to have gotten at the beginning; but patience, the sun is no detail out in the arid country. It does more things than blister your nose. It is the despair of the painter as it colors the minarets of the Bad Lands which abound around Adobe, and it dries up the company gardens if they don't watch the _acequias_ mighty sharp. To one just out of bed it excuses existence. I find I begin to soften towards the Colonel. In fact, it is possible that he is entirely right about having his old trumpets blown around garrison at this hour, though it took the Captain's boot to prove it shortly since. [Illustration: 22 HORSE GYMNASTICS] The command moves out, trotting quickly through the blinding clouds of dust. The landscape seems to get right up and mingle with the excitement. The supple, well-trained horses lose the scintillation on their coats, while Uncle Sam's blue is growing mauve very rapidly. But there is a useful look about the men, and the horses show condition after their long practice march just finished. Horses much used to go under saddle have well-developed quarters and strong stifle action. Fact is, nothing looks like a horse with a harness on. That is a job for mules, and these should have a labor organization and monopolize it. The problem of the morning was that we as an advance were to drive the two troops which had gone on ahead. These in turn were to represent a rapidly retiring rear-guard. This training is more that troops may be handled with expedition, and that the men may gather the thing, rather than that officers should do brilliant things, which they might undertake on their own responsibility in time of war, such as pushing rapidly by on one flank and cutting out a rear-guard.