Those journeys of his with Lannes through the heavens and their battles in the air for their lives were unforgettable.
Stopping on the last slope of Montmartre he studied space with his glasses.

He was sure that he saw captive balloons on the horizon where the German army lay, and one shape larger than the rest looked like a Zeppelin, but he did not believe those monsters had come so far to the south and west.

They must have an available base.
His heart suddenly increased its beat.

He saw a darting figure and he recognized the shape of the German Taube.

Then something black shot downward from it, and there was a crash in the streets of Paris, followed by terrible cries.
He knew what had happened.