This nice Christmas themed lesson has helped me to keep both SLT happy with its academic integrity and the students happy with a bit of Christmas cheer in that final week of term! We introduce the 1914 truce with the Sainsburys advert. The basic factual recall quiz afterwards is a nice chocolate winning opportunity. Students then cross-reference the advert’s idealised portrayal with a series of sources to reach a final judgement on how accurate the Sainsburys’ portrayal was. This is written up in the form of a response from the Advertising Standards Agency to a complaint about the advert not being accurate.