Bayonets, muskets, and Assassins? Akame ga kill / The Kingdom of Prussia)

You! Soldat! Stop right there! That's right, you Y/n. Congratulations, you've been promoted! To what rank? Why Generalleutnant of course, you're a Lieutenant General now, congratulations! Your first duty is to command the 7th Corps, who are to be deployed to establish a front on the new continent discovered. You don't know the first thing about the strategies, logistics, or tactics? Not to worry, you will have a capable general staff, and plot armor! What could go wrong?

(I'll try to keep this as historically accurate as possible, but I'm going to break some things to make it more fun, also this is my first story on Wattpad, so it's definitely not the best in ANY regard)