Can't move it at all...it is stuck and cannot be put in reserve. Just takes up five slots. It is a bug that I'm experiencing...not a game design.

I started the 1939 campaign and when I got a Max Dicker for an upgrade it finally was unable to deploy in the Russian campaign.

You also cannot remove disband it or upgrade it to something that you could deploy. It takes up five slots.

It pretty much has ended that campaign for me.