[Doug Stankey]

So you think that was a tough code, try this (from a recent Ed West photo)

25+D37 on a Ju86

or how about:
2L+D21 on a Do 17E

or how about:
2L+W40 on a Ju 52

or:
"dot" 04+01 on a Ju 52.

Once you've despaired, I will tell you what these are!
Here's a couple I can't solve:

03+F30 on a He 51.
07+A16 on a Ju 52

Enjoy!