right down to St. Quentin, down to the line the
French are on. We had photographs of it all.

_Senator Kirby_: When they started on the retreat?

[Illustration: (C) Kadel & Herbert.

_Miss Ruth Law at Close of her Chicago to New York Flight._]

_Adjt. Prince_: Yes, sir. So we knew exactly where their stand
would be made. Then, besides that, those photograph machines do a
lot of scouting. They have a pilot and a photographer aboard. He
has not only a camera, but quite often he has a Lewis gun with
him in order to ward off any hostile airmen if they should get
through the battle planes that are above him; in other words,
should get through us in order to fight him. They do a great deal
of the scouting, because they fly at a lower level. The battle
planes go up to protect photography machines, or to go
man-hunting, as it is called; in other words, to fight the
Germans. We fly all day, like to-day, as high as we can go, or as
high as the French go as a rule, about 5500 metres, about 17,000
to 18,000 feet.

[Illustration: (C) International Film Service.

_A French Aviator between Flights._]

_Adjt. Rumsey_: I think 5500 metres is about 19,000 feet. Some go
up 6000 metres, which makes about 20,000 feet.

_Adjt. Prince_: We go up there, and we have a certain sector of
the front to look after. If we are only man-hunting, we go
backward and forward like a policeman to prevent the Germans from
getting over our own lines. We usually fly by fours, if we can,
and the four go out together, so as not to be alone. We are
usually fighting inside of the German lines, because the morale
of the French and English is better than that of the Germans
to-day; and every fight I have had--I have never been lucky
enough to have one inside of my own lines--they have all been
inside of the German lines.

_Senator Kirby_: What is the equipment of a battle plane such as
you use?

_Adjt. Prince_: I use the 180 horse-power machine. It is called a
"S. P. A. D.," which has a Spanish motor. But a great many of the
motors to-day are being built here in America.

_Senator Kirby_: How many men do you carry?

_Adjt. Prince_: We go up alone in these machines. We did have two
guns. We had the Lewis gun on our upper wing and the Vickers down
below, that shoots through t