[Pieter H]

Pawel,
what makes you think this is an M instead of a P-version?

Larry,
The location looks like a typical Belgium Ardennes area, although one can never be sure. If we take the wider range of areas with a similar nature, and select Do-17 reconnaissance a/c that made an emergency landing during the first days of the WC, I come to the following list:
10-5 2(F)/123 4U+HK Schinnen, Netherlands
12-5 1(H)/21 Merzig (Luxembourg)
12-5 4(F)/11 Luxembourg
13-5 4(F)/11 Vielsalm (B)
15-5 4(F)/14 Givet
Note that all these are listed as Do-17P; if it would need to be a do-17M my list reduces to zero.

Regards, Pieter