There is nothing in any other country similar to what we see in our own, when the blast of the trumpet at once converts men of peaceful pursuits into warriors. Every war in which America has been engaged has done this; the valor that wins our battles is not the trained hardihood of veterans, but a native and spontaneous fire; and there is surely a chivalrous beauty in the devotion of the citizen soldier to his country’s cause, which the man who makes arms his profession, and is but doing his regular business on the field of battle, cannot pretend to rival. Taking the Mexican War as a specimen, this peculiar composition of an American army, as well in respect to its officers as its private soldiers, seems to create a spirit of romantic adventure which more than supplies the place of disciplined courage. The author saw General Pierce in Boston, on the eve of his departure for Vera Cruz. He had been intensely occupied, since his appointment, in effecting the arrangements necessary on leaving his affairs, as well as by the preparations, military and personal, demanded by the expedition. The transports were waiting at Newport to receive the troops. He was now in the midst of bustle, with some of the officers of his command about him, mingled with the friends whom he was to leave behind. The severest point of the crisis was over, for he had already bidden his family farewell. His spirits appeared to have risen with the occasion. He was evidently in his element; nor, to say the truth, dangerous as was the path before him, could it be regretted that his life was now to have the opportunity of that species of success which--in his youth, at least--he had considered the best worth struggling for. He looked so fit to be a soldier, that it was impossible to doubt--not merely his good conduct, which was as certain before the event as afterwards, but--his good fortune in the field, and his fortunate return. He sailed from Newport on the 27th of May, in the bark Kepler, having on board three companies of the Ninth Regiment of Infantry, together with Colonel Ransom, its commander, and the officers belonging to the detachment. The passage was long and tedious, with protracted calms, and so smooth a sea that a sail-boat might have performed the voyage in safety. The Kepler arrived at Vera Cruz in precisely a month after her departure from the United States, without speaking a single vessel from the south during her passage, and, of course, receiving no intelligence as to the position and state of the army which these reenforcements were to join. From a journal kept by General Pierce, and intended only for the perusal of his family and friends, we present some extracts. They are mere hasty jottings-down in camp, and at the intervals of weary marches, but will doubtless bring the reader closer to the man than any narrative which we could substitute. [In this reprint it has been thought expedient to omit the passages from General Pierce’s journal.]