And this is Christmas, and the world is supposed to be civilised. They came in from the trenches to-day with blue faces and chattering teeth, and it was all one could do to get them warm and fed. By this evening they were most of them revived enough to enjoy Xmas cards; there were such a nice lot that they were able to choose them to send to Mother and My Young Lady and the Missis and the Children, and have one for themselves.You can assume that this passage takes place