Davos 1917 is a Swiss-German TV production. 6 Episodes from the first series appeared in
December 2023. It was streamed on the Swiss TV website. I had hoped something about the
Zimmermann telegram would appear (as the title span features some encryption).
Also in Math in Movies is Kings Men, where the Telegram
is featured. There is still a bit of encryption appearing in the third episode as the
German spies tried to get the encryption device (a substitution cypher) in the form of a ruler.