The use of aircraft has changed the whole art and science of
warfare. With its disabilities well in hand, with its strength
but half revealed, the aerial service has revolutionised strategy
and shorn the unexpected attack of half its terrors. The Fourth
Arm is now an invaluable part of the complex military machine.

F. A. TALBOT.



CONTENTS
CHAPTER
I. The introduction of aircraft into military operations
II. The military uses of the captive balloon
III. Germany's rise to military airship supremacy
IV. Airships of war
V. Germany's aerial dreadnought fleet
VI. The military value of Germany's aerial fleet
VII. Aeroplanes of war
VIII. Scouting from the skies
IX. The airman and artillery
X. Bomb-throwing from air-craft
XI. Armoured aeroplanes
XII. Battles in the air
XIII. Tricks and ruses to baffle the airman
XIV. Anti-aircraft guns. Mobile weapons
XV. Anti-aircraft guns. Immobile weapons
XVI. Mining the air
XVII. Wireless in aviation