I am trying to identify the plane on the picture of your fathers battalion. I know it is a DC-2, but I try to find the registration (for an historic article about planes captured early in the war by the Germans).
I can no longer post photos from Photobucket as they wanted to start charging. I will probably eventually get another site but for right now can’t post photos.
If you want I will try to look up some of the photos and see if I can see any numbers. If so I will give you the info.