I was just an old veteran who was given a second chance

a veteran of the ussr who no longer exists dies of natural causes and is reincarnated in a world of magic and mythical creature with a system which allows him to create his own civilization with the technologies of the earth. But he will have to start with more backward technology and go up in the technological abyss. Let's follow our comrade in it's peripecia to rebuild his mother country (I'm not a communist I'm just writing this for fun and if you find that I have inappropriate remarks tell me).