
I think the author gave some hints here. An objective turning these barbarian people to gentle noble is just a cover. No matter how much the 8th battalion soldiers make merits on battlefield, if they cause a havoc/harming the bystanders on peaceful era accidentally or not, gives the royal family an excuse to terminate them

Someone please give me link to read novel. I couldn't find it anywhere ╥﹏╥

not sure if you still need it but heree:
https://www.novelupdates.com/series/the-villainess-captured-the-grand-duke/?grr=1

The bittersweet type of plots, I hate and love it. This manhwa's not annoying or cringe but perfect with some balance. Mc and uncle's attitude, personalities makes their character alive. I just want to hug mc and tell her to love herself more, someone who you thrust for can betrayed you but some people who dislike you can also change for better and unconsciously or not decided to love you. (⊃。•‿•。)⊃
Before I read, I looked up the comments. Talking about this 'tea' and that 'biscuit'. (=・ω・=)