Presently through the silence came the clatter of hoofs; Uhlans cantered past, pennons whipping from lance heads; then a soft two-toned bugle-call announced an automobile; and presently it loomed up, huge, through the parted ranks of the infantry, a great grey, low-purring bulk, slowing, halting, still purring.

A grey-clad general officer sat in the tonneau, a grey-uniformed hussar was seated beside the grey-liveried chauffeur.

As the car stopped several officers were already beside the running-board, halted stiffly at attention. The general officer, his cigar between his gloved fingers, leaned over the edge of the tonneau and said something in a very quiet voice.

Instantly a slim, stiff infantry captain saluted, wheeled sharply, and walked straight to the little file of prisoners who stood with their wrists tied behind their backs, looking vacantly at the automobile.

"Which is the prisoner-hostage who says he is American?" he snapped out in his nasal Prussian voice.

The young man who wore a golf-cap took a short step forward, hesitated.

"You?"

"Yes."

"Fall in again!"

The officer nodded to a sergeant of infantry, and a squad of men shoved the prisoners into single file, facing not the fatal wall, but westward, along the street.