Escadron volant
Escadron volant ("[The] Flying squadron") was a term used in the propaganda against the queen-regent of France, Catherine de' Medici. It was a part of the Black Legend around Catherine de' Medici, alongside her alleged use of poison, witchcraft and political conspiracies.
The term stood for the beautiful ladies-in-waiting of the queen dowager, whom she is claimed to have specifically employed in order to use them as spies to further her political agenda by exploiting their beauty and sexuality.