The following link is to a fictional letter drawn from real letters and diary’s.
http://www.aaronshep.com/stories/061.html
Though the Christmas Truce is the greatest example of its kind, informal truces had been a longstanding military tradition. During the American Civil War, for instance, Rebels and Yankees traded tobacco, coffee, and newspapers, fished peacefully on opposite sides of a stream, and even gathered blackberries together. Some degree of fellow feeling had always been common among soldiers sent to battle.