During the day we abandoned Fort Yorktown, and Kilpatrick established a camp for the regiment in the old peach-orchard, famous for the battle which occurred within its limits during McClellan's Peninsular Campaign. It is a lovely spot, which, however, shows signs of the conflict above referred to. There is scarcely a tree but presents marks of the bloody drama, in broken bark and splintered trunk, and in wounded branches which hang danglingly over our heads. RAID TO MATHIAS COURT HOUSE. During the day a detail of the regiment, sufficient in number to mount all the serviceable horses, was ordered out in an expedition against Mathias Court House. A detachment of infantry and a battery of artillery accompany the cavalry, and Kilpatrick is in command of the entire force. The line of march is through a rich and beautiful region of country. Mathias county is a lovely peninsula, encompassed by the waters of the Piankatank River, on the north, the Chesapeake Bay, on the east, and Mob Jack Bay, on the south. The North River forms a portion of its boundary on the west, against Gloucester county, and nearly severs it from the mainland. Kilpatrick was favored with fine weather in his expedition, and returned on the twenty-second crowned with success. A multitude of slaves was liberated, hailing our forces everywhere as their friends and protectors. Large numbers of fine horses and mules, with which that country abounds, were also captured. No Rebel force of any importance was encountered, and the boys greatly enjoyed their visit to the well-stocked plantations of the wealthy farmers, many of whom had never before seen a Yankee. _May 24._--I was taken very suddenly ill during the night. Dr. Kingston came to see me at three o'clock, and so skilfully treated my case, that I was quickly relieved of pain. In three hours from the time the surgeon came to my quarters, I was well enough to be up and on duty, so that at six o'clock I was able to call the roll of my company as usual, and to attend to other duties. The day after my illness I began to make out muster and pay rolls for my company. This work was undertaken by all the first-sergeants of the regiment. But our task is unusually difficult, as nearly all our company-books and papers were captured by guerillas at the commencement of the spring campaign. "Patience and perseverance" is our motto; and yet many times, as we endeavor to unravel the snarls and untie the knots, we find that the above virtues almost forsake us. _May 26._--This afternoon we had mounted regimental drill, and this was followed by dress-parade. Our time is now devoted mostly to drilling, in preparation, as we all think, for some movement.