PART XIII.--WAR IN THE AIR

CI. Aerial Warfare 485

CII. Air Raids 492

INDEX 495

LIST OF ILLUSTRATIONS

General Pershing Landing at Boulogne, France _Frontispiece_

Opposite Page

Sir Douglas Haig and Marshal Joffre 30

Notice Posted in French Munitions Works 62

General von Mackensen in Rumania 110

British Armored Motor Car, or "Tank" 222

Curtain or Barrage Fire 286

Woodrow Wilson, President of the United States 302

American Naval Gunners Fighting Submarines 350

A. F. Kerensky Addressing Russian Troops 430

LIST OF MAPS

Page Battle Lines on All Fronts, August 1, 1917 (_Colored Map_) _Front Insert_

Verdun Front, February 1, 1917 38

Allies' Gain at the Somme, up to February, 1917 66

Attack in the Riga Sector 87

Teutonic Invasion of Rumania 104

New German Submarine War Zone of February 1, 1917 207

The Entire Western Front, August 1, 1917 220

The German Retreat on the Western Front, March 18, 1917 233

Taking of Vimy Ridge by the Canadians, April 9 and 10, 1917 240

The French Offensive on the Craonne Plateau, Champagne 257

The Taking of Messines Ridge, June 7, 1917 266

The Somme Battle Front, August 1, 1917 283

The Russian Offensive and Retreat in Galicia 446

The Entire Eastern Battle Front, August 1, 1917 450