We have just released a new version of The Great War.
This version is fully compatible with the new Patch 1.4.2 "Oak" of Hearts of Iron IV.
A complete Changelog is available here.
To be noted that, as always, with or without Paid DLC, your gaming experience on The Great War will be very similar.
If you want to contribute to this great project, discuss, share your ideas, it's time to join us on GitHub.