Right now, I need to do a reasearch essay for English. My essay is on mercenarys, because I think mercinarys are cool and there isn't enught written about them. But I can hardly find anything about them at all! So could anyone tell me if you know any books or other non-internet source (I can only use one internet source) with factual information on mercenarys I could cite, let me know please, so I'll have something to write about.