Right now, I am wading through SHD 16 N 1522, which consists of documents relating to acts of collective indiscipline in the French army between 16 June and 1 July, 1917. Many of these acts of indiscipline took place at train stations between the front and Paris. Soldiers who were either going on or coming back from leave (permissionaires) routinely shouted anti-war slogans, assaulted gendarmes, and vandalized stations.

What is tricky is that there is no comprehensive review of the train schedules provided in the documents. For instance, documents refer to there being no problems along lines "2" and "PA," but trouble on line "4." Trains "RS4" and "HZ" are repeatedly mentioned. But nowhere is there an explanation how different lines or trains were designated, through which stations they went, and what units were on these trains. I am trying to reconstruct the schedules by noting every mention of a train designation, the station it was in at the time of mention, and the time of mention. In a few days, I hope to have a rail schedule put together, which I can then map on to a 1917 rail map of France. I hope to post a map of some of the lines later this week. I will be using gephi, a free graphing application that has a geolocation plug-in.