The cheat code is fine, maybe use it as a debugging key so like if you just wanna win all the battles quickly to make sure all scenes work, fine, but for the actual release perhaps don't allow them to enter a code like that.
If you want, Comrade could give you a starting bonus of +10 Communism, and "Czar" +10 (the other one?)
The battle stuff is also kinda repetitive, and no offence intended, the entire gameplay follows a pattern of:
Make choice (chance to die) -> build army -> build stuff -> war -> make choice (chance to die) etc.
Perhaps add other characters we can interact with, and relations with other country scenes?
The basic troops should also be boosted-- sure 1 soldier isnt great but 10,000 soldiers do more damage than 1 soldier damage * 10,000 (going over the top, trench warfare stuff)
And maybe add if too many casualties are sustained lower popularity or something?
And the Russia troop description is kinda strange-- "minimal casualties"? You only send in 1 troop.
*What I mean is sending in 2,000 riflemen should do more damage than sending in 1 rifleman 1000 times, if that makes sense?