Another of those distressful necessities of war occurred on withdrawing from the Wilderness. Wounded men of the Fifth and Sixth corps had already been left on the site of the hospitals near the old gold mine mills, and now hundreds more from every corps were abandoned for want of sufficient transportation. Let it not be thought that the Army of the Potomac was deficient in ambulances. Our hospital train was immense, yet insufficient for such an emergency as the present. To have provided a train sufficient for such a time, would have been to incumber the army with an enormous establishment, which would so interfere with its movements as to defeat the very object in view. The present was one of those terrible but unavoidable contingencies which must sometimes occur in war.

Trains had returned and brought away some of the wounded left at the old gold mine, but many were still there; and now, again, as we loaded ambulances and army wagons to their utmost capacity, making a train of many miles in extent, some two hundred of the wounded of our Sixth corps were left upon the ground. It was, indeed, a sickening thought that these noble fellows, who had nobly fallen in their country's cause, must be abandoned to the enemy, many of them, perhaps the majority of them, to die in their hands. All communication with their friends at home hopelessly cut off, and with no expectation of any but the roughest treatment from their enemies, it was a sad prospect for the unfortunate ones. Medical officers from each corps were directed to remain and care for those thus left behind, and a limited supply of rations and medicines were also left. Surgeon Phillips, of the Third Vermont, and Assistant Surgeon Thompson, of the Seventy-seventh New York, were the detail to remain behind from the Second division. They stayed with our wounded among the rebels for several weeks, faithfully ministering to their wants, until nearly all had been removed to Richmond, when, one day, learning that those remaining were to be sent south on the following day, they made their escape by night. By traveling throughout the night and hiding in the woods by day, they made their way across the Rapidan, and finally reached Washington in safety.

The Fifth corps, having taken the most direct road to Spottsylvania, arrived at Piney Branch Church at nine o'clock on the morning of the 8th, where the infantry skirmishers of the enemy were encountered. Gregg's division of cavalry had been for some time engaged with the rebel cavalry; but the cavalry had not discovered the infantry of the enemy before the approach of the Fifth corps. Two divisions of the Fifth corps were at once formed in line of battle, Bartlett's brigade of Griffin's division being sent ahead as skirmishers. As the corps advanced, the skirmishers of the enemy steadily withdrew, until they reached a large clearing, called Alsop's Farm, along the rear of which ran a small stream, the river Ny, about three miles north of Spottsylvania. Here the enemy was formed in force, with a line of strong earthworks. An attack was ordered, and bravely Warren's men advanced against the breastworks of the enemy; but their efforts to drive the rebels were unavailing. The field was composed of a succession of ridges, dotted here and there with clumps of pines and oaks, while the country in rear, through which the corps had already pressed the opposing skirmishers, was a wilderness of trees. The rebels had their artillery well posted, and they hurled a fierce storm of shells among the advancing lines, arresting their advance. The enemy in turn charged upon the Fifth corps, but the Union boys fought with desperation, repelling every charge and holding their ground. Our troops behaved magnificently, yet they were unable to push their advance further.

It was now evident that Lee, anticipating Grant's strategy, had set about thwarting it. As soon as our troops were withdrawn from Wilderness Run, Lee had hastened Ewell's corps and a part of Longstreet's on an inner road to Spottsylvania, and these troops now confronted us and disputed our advance.

Such was the situation when the Sixth corps arrived on the field at two o'clock in the afternoon. The day had been the most sultry of the season, and many of the men, overcome by the intensity of the heat, and exhausted by the constant fighting and marching since the morning of the 4th, had fallen by the wayside. The corps halted for about two hours, and was then ordered to the front to the assistance of Warren's corps, which was again hotly engaged with the enemy. We pressed forward along a narrow road leading through a thick growth of timber, until we came where the Fifth corps was contending the ground. The corps was drawn up in line of battle, but did not at once commence an attack.

Before us the ground was rolling and partially wooded, admirably adapted for defensive warfare. A wooded ravine, at a little distance from our front, concealed a rebel line of battle, and in our rear, were dense woods extending to the road along which our line was formed. These woods were on fire, and the hot blasts of air which swept over us, together with the burning heat of the sun, rendered our position a very uncomfortable one. Before long, however, the corps was ordered to the left, and took its position in the woods on the left of Warren's corps. Our Second division was formed in three lines with the view of attacking the enemy.

Soon after dark all things being ready, the division moved forward to the attack, but after some desperate fighting on the part of both the Fifth corps and our own division, finding the enemy too strongly posted, the attack was relinquished.

Toward midnight some changes of position were ordered, but, in the darkness, regiments lost their brigades, and wandered about in the woods until daylight, some narrowly escaping capture within the lines of the enemy.

There was little hard fighting on Monday the 9th, though skirmishing was briskly kept up along the whole line throughout the day. Our line of battle was now extended from northwest to southeast with Hancock's Second corps on the right, Warren's Fifth corps on the right center, Sedgwick's Sixth corps on the left center, and Burnside's Ninth corps on the extreme left. Our Second division was formed in a clearing on the side of a hill which sloped gradually until it reached a swamp, which, however, turned and passed through our line at our left. About three hundred yards in front of us was a strip of woods one-fourth of a mile wide, and beyond the woods an open field where the rebel forces were posted behind formidable earthworks. Just in our rear and on the crest of the hill, our batteries were posted so as to fire over our heads. On our right was a dense forest where the Fifth corps were posted, and on our left Burnside's troops occupied a more open country.

The whole line of the army was strengthened with breastworks of rails and logs, which the men procured in many cases from almost under the rebel guns, while the heavy mist of the morning concealed them from the view of their enemies. Over the logs and rails earth was thrown in quantity sufficient to protect the men from the shot and shell of the enemy.