Fort Gillem, Sunday, Dec. 11. To-day was a terrible reminder of old Wisconsin to us. Last night was the coldest night I ever stood on guard. Did not suffer much though on post. Kept up a rapid motion. I could not sleep much, tent too cold, having to sleep on the ground. The day was no warmer. All hands lay close inside with roaring fires in the stoves. Detail sent out this afternoon after more horses. Returned with thirty-nine. We have now eighty-four, all we need, and may expect marching orders next. Evening spent cheerfully reading, with cedar wood plenty in stove. It is freezing very hard out of doors.