Monday, Sep. 15, 1862—Regiment rest in field at 7 a. m. They need rest. Yesterday was a busy day and last night gave us rest. Cross Antietam Creek and make a stand on hill adjacent. An occasional artillery shot occupies the evening. Men in arms. I spent night with ambulances on vacant lot in Sharpsburg.
Sep. 16—Artillery begins at 8:30 a. m. After 11 firing ceases. We move our Brigade Hospital two miles in the rear.