Keep going it will all make sense.......
Remember this season is all about Tommy believing in something, he sees the change in ideology and that is what started WW2. he is working to undermine it for Churchill.
Also this is about Tommys journey. he is at rock bottom, he has realised he cant make a bargain with death, he is sick so he has to keep going and in Tommy style he does everything himself keeping it all locked up.
It is true historically with what was happening in Britain at the time and it is scary how the racism the power of the Nazi fascism ideology was turning people in to racists.
Gina is really the driving force in her and Michaels relationship. Lady Diana Mitford is the true driving force in Moseleys relationship.