This is A War of a Madman's Making: A combination of Visual Novel and text-based RPG centered around war planning and political survival, inspired by games like Suzerain and Decisive Campaigns: Barbarossa.

War of a Madman's Making is set in a fictional world where nuclear escalation has blackened the skies. You are a citizen who has been mysteriously called up to serve as Field Marshal of the Great Leader's army. Through a combination of resource management, political maneuvering, and strategic military planning, you must survive the impending war - and the purges and assassinations that will come along with it.

You have the freedom to be ruthless in your methods, but doing so too freely could have consequences - particularly if you face a tribunal for crimes against humanity. However, mismanage your resources pursuing nobler causes, and you'll find a similar fate at the hands of your beloved Great Leader.

Rein in the disaster, protect your family, and survive the purges.

[From Steam]