The author Dr Richard Duckett a few months answered a query I had in detail. He is due in 2025 to give a talk: See: Webinar Schedule 2024-2025 - Kohima Educational Trust
Richard is very knowledgeable on this subject and extremely generous in sharing his expertise and time with others.
Bookings are now open (free) for this webinar: The Special Operations Executive and the Battle of Imphal - Kohima Educational Trust