THE EYES OF BATTLE
Aeroplanes and Airships—They Spy the Movements of Forces on Land or Sea—Lead Disastrous Bomb Attacks—Valuable in "Spotting" Submarines—The Bombardment at Messines Ridge
[CHAPTER X]
WAR'S STRANGE DEVICES
Chemistry a Demon of Destruction—Poison Gas Bombs—Gas Masks—Hand Grenades—Mortars—"Tanks"—Feudal "Battering Rams"—Steel Helmets—Strange Bullets—Motor Plows—Real Dogs of War
[CHAPTER XI]
WONDERFUL WAR WEAPONS
The Terrible Rapid-fire Gun—Armored Automobiles and Automobile Artillery—Howitzers—Mounted Forts—Armored Trains—Observation Towers—Wireless Apparatus—The Army Pantry