Operation Weserübung?

[Lopo]

I have finished the first three missions in the Total Germany campaign and the Feb. 25 1940 the BDU still doesn't offer me the choice of the last mission: Operation Weserbürung.
What I have to do? Sink some british ships waiting for the beginning of the operation (recon mission)?
Or this is another bug?

Take care

[Zedi]

...
Sink some british ships waiting for the beginning of the operation (recon mission)?
...
Yep. It will become available next month.

[Lopo]

Yep. It will become available next month.

Thanks. I'm relieved.