British Army 

Yes, it's a hard one to tackle, and I think you've done a fantastic job given the difficulties involved.  I don't think it's far from A-Class, but I think if you ever want to take it to FAC, it'll need some overhauling.  In particular, you'll have to find some sections to tighten up, and once you've done that I think there are some that could use further expansion.  Personally, I think that the section on equipment should be significantly tightened, leaving some room elsewhere, but I don't really know.  Also, I was about to add it to the ACR, but this is just as good, you're missing one of the conflicts in the immediate aftermath of the war (and as a matter of fact an area where troops were deployed in East Africa during the war), Somaliland.  See 1920 conflict between British forces and Somaliland dervishes and Hastings_Ismay#Somaliland (which gives a good account of the conflict, though just from the perspective of one soldier).  I don't think you need to do any more than mention the conflict, but a good source is  if you want it.