Humana Invicta "Humanity Unconquered"

In the crumbling Kingdom of Hyfelt, on the edge of total collapse, nobles sharpen their knives for a bloody succession war while monsters tear through the land and other races await to enslave and cleanse what's left. Then came "Vincent" a history-obsessed tabletop wargamer who somehow woke up as Baron "Victor", lord of a northern backwater town of Vindia. With nothing but his brain full of mankind's past and wargaming tactics, can this random modern guy pull a dying kingdom back from the brink and stop whatever races from turning humans into footnote in history book, or does he just become another idiot who thought he was special, only to get erased from history like everyone else? (AU: Originally posted on WebNovel First)