Camp Union, Fayetteville, Virginia. Friday, December 20. — A. M., before breakfast, some clouds and wind but sun now shining. Change threatened. We have here Twenty-sixth Regiment, now under Lieutenant-Colonel Eckley, who also commands the post; Thirtieth Regiment, five companies, under Colonel Ewing; Twenty-third, now under my command; McMullen’s Battery, and a Pennsylvania cavalry company, stationed on the road towards Raleigh. Twenty-third here 550, Twenty-sixth, 600, Thirtieth, 200, battery, 40, cavalry, 40—1430 men. Building two forts on hill northeast of town, one on hill southwest of town. Wind and clouds during the day, but the sun shone brightly on our dress parade, making this our sixteenth good day.