After reading another biography of Marlborough, I am annoyed by the fact the authors mention but do not describe the Lines of Ne Plus Ultra. They make it sound (I have read Chandler and Konstam) as if it was the ultimate system to defend France, and yet Marlborough 'defeated'/crossed it in a matter of weeks.
Admittedly, heMarlborough was goodskilled but... I don't know if it makesdoesn't make sense based on the ultimate'ultimate' level of defense it was meantthese lines are described to be. Even Wikipedia in these biographies (at least in Englishwithout providing detail). English Wikipedia has nothing to sayat all on this. So, what do we actually know about the Lines of Ne Plus UltraUltra—what were they and what was their intended function?
NoteNote: I imagine I am held back by not searching in French to be fair, but I am not 100% convinced.