Breastworks. Filling up sandbags in morning. Go up to RB’s front line in afternoon. All firing ceases along the line, except the E. Lancs. Trenches, from about 5 pm. Band in German trenches plays carols, Austrian National Anthem, and God Save the King. Cheering from both sides and Christmas wishes exchanged. Our men singing as well. On guard four hours. Xmas cards from King, Queen, and Brigade. Hard frost.