I wanted to write about a group of Hussars light cavalry that wore black feathers head to toe. I saw a book from Poland with a drawing on the inside cover, but I have not been able to find out anything since. I hoping someone has information on them. I want to write a historical fiction based on their group as a special ops team with maybe a little magic.
I don't mind doing the research as I was 3 years into my last book, so any direction someone could point to and I'll start digging.