"Tobacco?" I asked, now fully alive to the situation.

The brigadier spat.

"Of course, as full as she'll float," he answered. He leaned forward and touched me good-humouredly on the shoulder. "I'm short of men," he said hurriedly.

"Command me," I replied. "I'll do my best. I shall return to-night." And I rose to take my leave, but he instantly raised his hand in protest. "You are under arrest, monsieur," he declared quietly, with a shrug of his shoulders.

I looked at him wide-eyed in astonishment.

"Arrest!" I gasped.

"Do not be alarmed," he replied. "It will only be temporary, I assure you, but since you have so awkwardly stumbled among us there is no alternative but for me to detain you until this sacré affair is well over. I cannot, at all events, let you return to the village to-night."

"But I give you my word of honour, monsieur," I declared, "I shall not open my lips to a soul. Besides, I must dine at eight to-night with Madame de Bréville. Your excellency can well understand."

"I know you have friends, monsieur; they might be inquisitive; and those friends have servants, and those servants have friends," was his reply. "No, it is better that you stay. Pierre, give monsieur a carbine and a place ten metres from your own at sundown; then report to me he is there. Now you may go, monsieur."