“So much the better. Do you know anything about fortifications?”

“I believe I do, sire,” said D’Artagnan, smiling.

“That is to say you can readily distinguish a fortress from a simple fortification, such as is allowed to chatelains or vassals?”

“I distinguish a fort from a rampart as I distinguish a cuirass from a raised pie-crust, sire. Is that sufficient?”

“Yes, monsieur. You will set out then.”

“For Bretagne?”

“Yes.”

“Alone?”

“Absolutely alone. That is to say, you must not even take a lackey with you.”

“May I ask your majesty for what reason?”