Thanks for your reply Chris.Even though SandyBrook has posted (correctly) here, could anyone wishing to comment on his information please do so for the time being in the dedicated thread, here: https://birminghamhistory.co.uk/forum/index.php?threads/rover-a-coy-home-guard-1941.52157/ (We may combine threads later).
Pedrocut - thanks for that. Some of the names look familiar. (In fact I think I was at school with the son of one of them, Sgt. Arblaster!) Intend to incorporate this info into the HG website in due course (with ack., of course).
Pete - the basic unit of HG organisation was the Battalion, invariably commanded by a Lieutenant-Colonel. It comprised anything between 1000 and 2000 men (and a few women) and was divided into Companies each commanded by a Major. Further down the line were Captains, Lieutenants and Second Lieutenants; and NCOs. Battalions were responsible to Area/Zone commanders, usually of Colonel rank. Further up the line of Staff Officers of that type came more elevated ranks still but at what point such men were still officially Home Guard or or were co-opted serving Army officers or Army Council members, I don't know.
Thanks for that, Pedrocut. Have you by any chance found the letter from "Captain, Home Guard" which sparked this off?
(This soldier's letter gives a suggestion of the bitterness felt by some of the "D-Day Dodgers" in Italy whose suffering, they felt, was forgotten about at home - or at least given much lower priority - after D-Day)