Not Belarus, but Ukraine that I have some ideas for. Who do I need to talk to? Pioniere and Cegorach?
Anyways...
Luxembourg:
Okay, regarding Speller, I've done some more research, and can present a better case for his inclusion as a TT. I also found someone for later on in the game.
I think this is actually part of the picture in my book that I was talking about. The whole picture is him reviewing his troops.
Name: Emile Speller
Skill: 3
Traits: Training, Decentralised Execution, Infantry Focus and Small Unit Tactics
Years: 1936-1952
While I wasn't able to figure out when he was assigned to be CiC of the Lux Army, the site I am showing lists that he was CiC until 1940, of course at which time his nation was occupied. I list his end date as 1952, it was then he was assigned to be Aide to the Grand Duchess, and he was most likely pretty old. While he was only CiC until 1940, I think we can have him from the start, because regardless he was a high military figure in Luxembourg, at it wouldn't be unreasonable that he would do doctrinal work. If his country was not annexed he most likely would have continued being CiC past 1940.
Name: Félix de Bourbon-Parme
Skill: 2
Traits: Centralised Execution, Infantry Focus and Small Unit Tactics
Years: 1945-1964
Was a Colonel of the Volunteer Company since 1920, and was Inspector General of the Lux Army from 1945 until 1967. He died in 1970