This is really impressive, Jupiter. Wonderful post.
If you are so interested in medical care in WW1, I hope you have read "Vie des Martyrs" by Georges Duhamel, the famous French writer (I suppose you read French). He was a field surgeon at hospitals behind the front (notably at Verdun) during a large part of WW1 and described his daily practice in most gruesome details. It is wonderfully written though. Of course it is on the French side (although they occasionally had German patients). Takes you back to the crude reality of war...
Bruno