How about to have some missions for the grand campain? I have some ideas:
Help our neiobours
Faction: Sweden
Mission: Ally Finland and join war against Soviet
Reward: ???(You might think out something)
Descrubtion: Listen up riksdags member! Our earlier enemys in Russia is attacking our neibours in Finland. If Finland falls we might become Stalin's next target. The minister and the king says that we must act quick if we want to keep the red enemies away.
Bring Hitler to a downfall
Faction: Soviet union
Mission: Coungquer Berlin
Reward: DDR becomes a protector(You might change a German state)
Desc: Listen up officer! The traitors in Germany must pay for their betray! If you attack Berlin might Hitler surrender(Commite sucide). Stalin want's him dead!
Make a dream become true
Faction: The third reic(Germany)
Mission: Win the war against the Soviet union
Reward: ???
Desc: Listen up officer! Der fürher want's the communism destroyed, crush them befor e they grows to powerfull!
Stay neutral
Faction: Sweden
Mission: Increase relations with Germany and Great brittain
Reward: ???
Desc: Listen up riksdags(Riksdagen=The swedish govument council) member!Germany has counquerd our neibours in Denmark. The state-minister and the king thinks that it might be smart to let the germans walk across Sweden to reach Norway but we don't wan't to anger the allied. Become friend with both the allied and the axis to have our liberty protected!
You could have a '' listen up...''' than a title in every line. As exempel you could use officer in every dictatorship nation, Parlamentary member in Great brittain, riksdags member in Sweden and have other govument names for other democratcy nations.