Like all British Army units Casualty Clearing Stations kept war diaries. You can download that for 47 CCS for the relevant (for a small fee) from <
The unit location should be noted, and it can be possible to work it out with some accuracy. CCSs were either in a building, if a large enough one existed in the location, or sometimes under canvas. I investigated the location of 36 CCS as my great-great-uncle died of his wounds there during the Battle of the Somme, you can follow the process I followed by reading my blogpost <