Front matter
Reading edition
Transcriber's note: Obvious printer's errors have been corrected. Hyphenation and accentuation have been standardised, all other inconsistencies are as in the original. The author's spelling has been maintained.
Page 239, "The concentration one for operations" has been changed to "The concentration zone for operations".
A great war Zeppelin on a bomb-dropping expedition is sailing over an enemy city. High above it are the city's defending aircraft—a biplane and a monoplane—ready to attack the raider with their machine guns