I used to work with the guy who wrote this: https://www.abebooks.co.uk/book-search/title/funnies/author/futter-geoffrey-w/ Very nice guy. Gave me a few surplus military books when I was young and poor.
Fantastic! I used to have that book, but foolishly loaned it out. IIRC, it was the only place I ever saw a picture of the deck that was added to Buffalo IIs, allowing them to carry 17pdr AT guns and trucks on top.
My wargames blog: http://www.jemimafawr.co.uk/