Here is a link (from within the SGC website) detailing the changes made particularly to the East course during it’s history and also showing the various WWII activities all as shown in the M&E book mentioned above.
Very comprehensive and well worth a look -
https://www.yumpu.com/en/document/view/60040459/saunton-historic-report-2017-07Atb
Edit - old photos from the original pre-WW2 East course later added.
The exact location in the first photo is unclear. Wonderful view of the general aspect and terrain though.
The second photo is of the then 18th green - the hole played in from the right. This green is now in approx the same location as the current short-game practice area