Monday, September 22.—Sharpsburg, headquarters of McClellan. Sumner’s corps marched to Harper’s Ferry to-day; but we remained, receiving a new battery of three-inch rifle guns.
Tuesday, September 23.—Sharpsburg. We left the place at two o’clock P. M. Crossed the Antietam, and marched to the foot of Maryland Heights, going to camp for the night.
Wednesday, September 24.—We arrived at Harper’s Ferry at ten o’clock A. M., and went to camp on Bolivar Heights.
Sunday, September 28.—Bolivar. Mounted inspection.
Wednesday, October 1.—President Lincoln visited the Army of the Potomac. Our battery fired a salute of twenty-one guns.
Friday, October 3.—Bolivar. Mounted inspection.
Sunday, October 5.—Bolivar. Mounted inspection. The Seventh Regiment, Rhode Island infantry, arrived at Sandy Hook, Maryland.
Thursday, October 9.—Bolivar. We were paid off for five months service.
Thursday, October 16.—Bolivar. Reconnoisance in force. Ten thousand men started early in the morning under command of General Hancock. The enemy was found near Charlestown, opening on us with artillery. Battery A, Fourth Regular Artillery, went into action. Our battery supported the Fourth regulars, and the enemy’s battery left soon. Battery A, Fourth regulars, had a caisson blown up, one man killed and four wounded. We occupied Charlestown, going in position outside of the town, pointing to Berryville and Smithfield. Heavy rain in the evening. The cars were running between Harper’s Ferry and Charlestown all night, carrying off grain from the latter place to Harper’s Ferry. The troops were in line of battle during the night.
Friday, October 17.—Charlestown, Virginia. In position. We left Charlestown at two o’clock P. M. Marched back to Halltown. At that place General Hancock formed a line of battle, an attack of the rebels being anticipated. All the artillery went in position on high ground, while the infantry formed below. We remained on the hill all night. It was very cold during the night.