Hello Hanno.
Here in Canada, we have a National Air Photo Library located in Ottawa. It holds all the negatives from every Air Photo Survey ever done in Canada, along with maps plotting the routes the aircraft flew for every survey done. Most surveys were done at an altitude providing a one square foot photo print equivalent to one square mile of surface coverage. Some prewar surveys were done using oblique cameras and are not to this scale and a few later surveys in recent decades are done at a higher altitude giving a larger surface coverage per photo, but less detail.
Each Province typically has a Branch Air Photo Library where one can review photos and survey maps and order local copies of prints. The RCAF mapped all of Canada in 1948 and 1964 using Lancaster Bombers, in conjunction with Spartan Aviation, a private company, that flew Mosquitos and a handful of Hornets. They crashed all their Hornets because the pilots could not handle them.
Anyway. Does Holland maintain an equivalent Air Photo Survey Library anywhere that you might have access to? If so, the first step would be to identify the road in the wartime photo where the C15TAs were formed up and then see if any old air surveys were done over that location between 1945 and around 1960, before any major developments took place in the area. The trees in the photo would most likely have survived before 1960 and could help confirm the exact spot where the photo was taken. The regimental Diaries might also give you a clue if there is enough information regarding the route they took and where they might have halted, to wait for further orders.
An interesting bit of research for you in any event.
David
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