I have produced about six, including all those on the BBC History site.
Here are some more.

"Some historians, however, argue that the other ranks were not likely to exhibit 'high diction' and in that point they may be partially correct. But they did have a real sense of patriotism and devotion to their homeland and the evidence says as much. 'Such sentiments were by no means as rare among the rank-and-file as is normally assumed; indeed, censorship reports compiled from the letters of tens of thousands of soldiers remarked explicitly on the continued, widespread evidence of idealistic beliefs and sacrificial willingness among other ranks ...'(6) Sacrificial ideology is a logical extension of Watson's earlier work and complements his thesis that morale and sacrificial willingness were inextricably linked to the outcome of the First World War."

http://www.history.ac.uk/reviews/review/1039