Greetings, Cas ! That would have been a voluntary position, meaning, without remuneration. It was one of several voluntary units necessitated by the anticipated invasion of Britain by the Germans, following their occupation of France and Belgium in 1940. The successor organization was dubbed Home Guard by your new Prime Minister, Winston Churchill. He faced being drafted had he remained a full blown citizen. As it turned out, he and his fellows filled vital roles in the defence of Britain. I would assume that he would not have had a military service number as such, but would have been issued an identification card of some sort. You may seek out such a document on e-bay, I would think, as well as any civil medals which may have issued forNatl. Fire Service. I haven't identified any docment repository, but I managed to bring up a menu which may prove fruitful for you. Under GOOGLE, I entered NATIONAL FIRE SERVICE UK WW II, and found several possibilities. For example, the second entry under the above was captioned WEBSITE DATA BASE... and next under that was MIDNIGHT WATCH, which gives the details of HOME GUARD, with reference to NFS. In this same section, there was listed a firm which offers various items for sale. One mention was made of NFS, but I didn't make a note of the reference and can't recall the item. I leave it to you to seek it out. I hope this leads to more and better information. Let me know. OK ? Louie F. Turner.