A long line of infantry of the French guards formed the centre of the assailants. Several batteries of artillery were at hand, and divers strong columns of horse and foot were held in reserve. A regiment of lancers was on the nearest flank, and another of cuirassiers was stationed at the opposite. All the men of the royal family were in the field, surrounded by a brilliant staff. A gun was fired near them, by way of signal, I suppose, when two brigades of artillery galloped through the intervals of the line, unlimbered, and went to work as if they were in downright earnest. The cannonade continued a short time, when the infantry advanced in line, and delivered its fire by companies, or battalions, I could not discern which, in the smoke. This lasted some ten minutes, when I observed a strong column of troops, dressed in scarlet, moving up with great steadiness and regularity from the rear. These were the Swiss Guards, and there might have been fifteen hundred or two thousand of them. The column divided into two, as it approached the rear of the line, which broke into column in turn, and for a minute there was a confused crowd of red and blue coats, in the smoke, that quite set my nautical instinct at defiance. The cuirassiers chose this moment to make a rapid and menacing movement in advance, but without opening their column, and some of the artillery reappeared and commenced firing at the unoccupied intervals. This lasted a very little while for the Swiss deployed into line like clock-work, and then made a quick charge, with beautiful precision. Halting, they threw in a heavy fire, by battalions; the French guard rallied and formed upon their flanks; the whole reserve came up; the cuirassiers and lancers charged, by turning the position assailed, and for ten or fifteen minutes there was a succession of quick evolutions, which like the _finale_ of a grand piece of music, appeared confused even while it was the most scientific, and then there was a sudden pause. The position, whose centre was a copse, had been carried, and we soon saw the guards formed on the ground that was supposed to have been held by the enemy. The artillery still fired occasionally, as on a retreating foe, and the lancers and cuirassiers were charging and manoeuvring, half a mile farther in advance, as if following up their advantage. Altogether, this was much the prettiest field exercise I ever witnessed. There was a unity of plan, a perfection of evolution, and a division of _materiel_ about it, that rendered it to my eyes as nearly perfect as might be. The troops were the best of France, and the management of the whole had been confided to some one accustomed to the field. It contained all the poetry, without any of the horrors of a battle. It could not possess the heart-stirring interest of a real conflict, and yet it was not without great excitement.