Last Minute Edexcel GCSE History of Medicine advice needed!

the source you should almost ALWAYS use is "RAMC records" - UNLESS it talks about nurses or ambulances, in which case you should use FANY records. In both cases, add a specific detail, such as records *from a Base Hospital" or whatever. The "how it would help" just needs to clearly explain - for example, Base Hospitals were the last point on the evacuation route, so their records would have recorded exactly how many soldiers were returned to England. I'm not really sure how to advise on the first two questions, but I would try to be specific while not digging yourself into a hole.