_Wednesday, November 12._--Warrenton. We received the first mail since the twenty-first of October.
_Saturday, November 15._--Left Warrenton this morning. Marched nine miles and went to camp.
_Sunday, November 16,_--Started at eight o'clock A. M. Marched fifteen miles and went to camp.
_Monday, November 17._--Left at eight o'clock A. M. for Falmouth. Pettit's Battery went in position on a hill opposite Fredericksburg, and had quite an action with a rebel battery. Our battery advanced to support, but did not fire. At five o'clock P. M. we retired and went to camp.
_Tuesday, November 18._--Camp near Falmouth. The Army of the Potomac is divided in three grand divisions. Sumner commands the right, Franklin the left, Joe Hooker the centre, and Sigel the reserve.
_Thursday, November 20._--We moved our camp closer to Falmouth. It rained all day.
_Wednesday, November 26._--Near Falmouth. Lieutenant Henry Newton left the battery and service to-day.
_Thursday, November 27._--Thanksgiving day, but a poor one for us. The army lives on hard bread, pork and coffee.
_Sunday, November 30._--The railroad to Aquia Creek is in operation now.
_Monday, December 1._--The men of our battery cleaned up the camp of the First Minnesota regiment. A guard was kept on the ground all night.
_Tuesday, December 2._--Near Falmouth. The battery moved on the new ground.
_Wednesday, December 3._--A stable for the officers' horses in the course of building.
_Monday, December 8._--Commenced to build a stable for the battery horses.
_Wednesday, December 10._--New clothes were given out to-day. Everything ready for an advance.
_Thursday, December 11._--Bombardment of Fredericksburg. Last night a large part of the artillery was brought in position, close to the river, and before daybreak, about one hundred and thirty guns were throwing shell and shot in the city, without eliciting any reply, except from rebel sharpshooters in the cellars on the river line, compelling the engineers to give up the attempt of laying pontoons across the river. Fires broke out in several places during the day. Towards evening, two companies, one of the Seventy-first New York, (Tammany,) and one of the Seventh Michigan, volunteered to cross the Rappahannock on scows, charged on the sharpshooters, and took fifty prisoners, losing fifteen killed. The pontoon bridge was completed shortly after, and three thousand men entered the city before night. We remained this side of the Rappahannock. Our battery was close to the river all day, but did not fire.