Just a wild guess, but I think the reference to campaigns might mean just a an expanded version of what we have come to know as scenarios, but much longer and more detailed in scope and length. THeres still a reference to a full what you might call career which is labeled as dynamic where critical interactions can affect the course of the whole war. How all this comes together remains to be seen. In the greatest possibility what happens if you strangle England, or do such damage to the RUssian convoys. How will this affect the missions you see further down the line? Just speculating mind you.
As someone said I think the public info is being scripted by lawyers and politicians!