Abyssinia, Italian defeat in, I, 192
Adige River, fighting along, V, 280
Adige Valley, operations in, VI, 460
Admiral Sims, commanding American destroyer flotilla, VI, 357
Aerial combats, number of, V, 426
Aerial maneuvering, French, IV, 55
Aerial raids, VI, 492
Aerodromes, attacks on, IV, 473
Aerodromes, German, IV, 470
Aeroplane attack by Germans on Lemnos, VI, 169
Aeroplane coast battle, IV, 471
Aeroplanes, losses in, VI, 255
Aeroplanes, number of, V, 420
Aeroplanes, western front, VI, 486
Aeroplanes and submarines, I, 23
Aeroplane warfare, VI, 168-181
Aeroplane warfare on submarines, V, 414
Africa, British possessions in, I, 181
African coast, operations on, III, 493
Agadir, I, 140
Agar Khan, III, 24
Aircraft, losses in, IV, 479; VI, 51
Air fighting, strategy and tactics of, IV, 459
Air fights along the Somme, VI, 50
Air raids on England, IV, 16
Air raids on Paris, IV, 19
Aisne, battle of, II, 130-135
Aisne, counterattacks on the, VI, 248
Alaska, garrisons in, I, 11
Albania, Austrian advance, IV, 336
Albania, Serbian retreat, IV, 303
Albania, withdrawal of Serbian forces from, IV, 337
Albanian uprising, I, 247
Albanians, racial characteristics, I, 220
Alcantara, merchantman, V, 59
Alexander II, assassination, I, 152
Alexander III and France, I, 152
Alexandretta, III, 503
Alexiev, General, commander in chief Russian army, VI, 429
Algonquin, sinking of, by German submarine, VI, 317
Allenstein, capture of, II, 437
Allied aviators, work of, V, 421
Allied commands in Champagne, IV, 80
Allied demands on Greece, V, 224-227
Allied nations, policy of, I, 105
Allied offensive, March, 1915, IV, 45
Allied raid, Houlthulst Forest, IV, 56
Allies, withdrawal of, into Greece, IV, 308
Alsace, French in, IV, 40
Alsace-Lorraine, conditions in, I, 138
Alsace and Lorraine, campaign in, II, 38-45
Altkirch, capture of, IV, 40
American airmen in France, VI, 490
American army, I, 11
American aviators, VI, 181, 490
American citizens, rights of, defended by President Wilson, IV, 503
American Commission to Russia, VI, 416
American Congress, resolution on sinking armed merchantmen, IV, 502
American destroyer flotilla, VI, 357
American expedition in France, VI, 357
American Government's assertion of neutral rights at sea, IV, 480
American merchant marine, VI, 476
American navy, strength of, I, 11
American navy, work of, in foreign waters, VI, 357
American negotiations over Ancona sinking, IV, 490-496
American note to Austria on Ancona issue, character of, IV, 492
American war preparations, VI, 328
American Prussian treaties, VI, 298
American response to German note on Sussex, V, 458
American second note on Ancona issue, IV, 494
American training camp in France, VI, 361
American troops, transportation of, to France, VI, 358
American vessels sunk, VI, 202
American warships in European waters, VI, 482
Anafarta Ridge, attack on, IV, 352
Ancona, destruction of, IV, 490
Ancona, yielding of Austria-Hungary on issue, IV, 494
Ancre, British gains in, VI, 223
Anglo-American trade balance, V, 52
Anglo-Chinese conference, I, 184
Anglo-French agreement, I, 136
Anglo-Russian agreement, I, 136
Anti-Catholic movement in France, I, 163
Anti-Serbian riots, I, 260
Antwerp, Belgian withdrawal to, IV, 40
Antwerp, fall of, II, 167
Anzacs, heroism of, III, 460, 462
Appam, capture of, IV, 160
Arabic, sinking of, IV, 150, 480-490
Arabic, German version, IV, 483
Arabs, assistance given British in Mesopotamia, IV, 423
Arabs, confederation of, IV, 429
Arbitration, failure of, I, 14
Archibald papers, V, 11
Area of British Empire, I, 286
Area of France, I, 286
Area of German Empire, I, 286
Area of Russia, I, 286
Argechu River, VI, 117
Argonne, activity in, III, 158
Argonne, campaign in, II, 193-194
Argonne Forest, fighting in, IV, 48
Argonne, German attacks in, in September, 1915, IV, 55
Argonne, operations in, V, 375
Argyll, loss of, IV, 154
Armed-merchantman resolution, final form of, in Congress, V, 439
Armed-merchantmen resolutions, debate in Congress, V, 434-435
Armed neutrality, address of President Wilson, VI, 304
Armed-shipping resolution in Congress, V, 436
Armenian atrocities, III, 472
Armenians, massacre of, IV, 378
Army, American, strength of, I, 11
Arras, Canadian victories at, VI, 56
Arras, fourth blow by Haig, VI, 256
Arras, operations around, IV, 127
Arras, operations around, VI, 39
Arras, second phase of, VI, 249
Artillery, II, 366
Artillery activity on the western front in September, 1915, IV, 55
Artois, British successes in, IV, 85
Artois, fighting in, III, 121-128
Artois, French campaign in, IV, 85
Artois sector, V, 373
Asia Minor, Germany in, I, 50
Asiago, Austrian advance, V, 256
Asiatic Turkey, disorders in, IV, 377
Asphyxiation from gas, I, 53
Assassination of crown prince, Austrian report on, I, 350
Athens, street fighting in, VI, 147
Atkutur, battle at, III, 474
Aubers Ridge, attacks on, III, 128
Augustovo, Battle of, II, 444
Ausgleich, I, 146
Australians at Suvla Bay, IV, 356
Australian troops at PoziÈres, V, 409
Austria and Prussia, I, 127
Austria-Hungary, American relations with, VI, 328
Austria-Hungary, area of, I, 286
Austria-Hungary, explanation of sinking of Ancona, IV, 465
Austria-Hungary, position of, I, 142
Austria-Hungary, request for recall of Dr. Dumba, V, 10
Austrian air attacks on Italian cities, V. 291
Austrian army, I, 309
Austrian armies in Poland and Galicia, command of, IV, 181
Austrian army in Serbia, IV, 259
Austrian and Balkan nationality, I, 258-259
Austrian captures of Durazzo, IV, 338
Austrian note, July 27, 1914, I, 270
Austrian counterattack, repulsed by Italians, V, 269
Austrian defenses in Alps, IV, 394
Austrian demands on Serbia, I, 261-265
Austrian fleet in the Danube, VI, 97
Austrian forces along the Italian front, increase of, V, 245
Austrian-Italian aviators, V, 428
Austrian-Italian front, V, 229
Austrian losses at Lutsk, V, 159
Austrian losses in Serbia, II, 343
Austrian naval strength, II, 206
Austrian note to Serbia, I, 261
Austrian offensive in Trentino, V, 246
Austrian offensive in Trentino, increase of, V, 235
Austrian offensive in Volhynia, V, 138
Austrian press, accusations, I, 353
Austrian proposals to Rumania, III, 377
Austrian raids on Italian coast, III, 394
Austrian rupture with the United States, VI, 328
Austrian squadron shells Italian coast cities, IV, 168
Austro-German capture of Bucharest, VI, 119
Austro-Hungarians defeated near Kuty, V, 190
Austro-German invasion of Serbia, IV, 263
Austro-German resistance to the Russians, VI, 73
Austro-Hungarian press, I, 351
Austro-Hungarian reply to Ancona note, IV, 492
Austro-Italian line, V, 233, 234
Austro-Russian front, III, 236
Austro-Russian operations, resumption of, V, 133-141
Aviators, loss among, V, 425-426
Avlona, battle between Austrians and Italians near, V, 220
Avlona, Italians at, IV, 327
Avocourt Wood, German occupation of, V, 351
Aylmer, General, IV, 446
Azerbayan, failures in, III, 477

Babuna Pass, resistance of Serbians, IV, 283
Bagdad, British at, IV, 419-425
Bagdad, expedition against, I, 62
Bagdad, Russian advance, V, 330
Baiburt, capture of, by Russians, V, 337
Balfour, Arthur J., reply to Churchill, V, 61
Balkan League, I, 248
Balkans, conditions in, 1916, V, 212
Balkans, countries, II, 275-286
Balkans, diplomacy in, I, 59
Balkans, summary of first year's conditions, IV, 255
Baltic Sea, operations in, III, 191
Ban-de-Sapt, attacks on, III, 164
Bapaume, capture of, VI, 232
Basra, capture of, II, 508
Battle cruisers, British, lost in Jutland naval battle, V, 90-91
Battle cruisers, importance of, I, 21
Battle line on eastern front, II, 262
Battle line on the eastern front in the spring of 1916, V, 116
Battleships and fortifications, I, 24
Battleships, advantages of, I, 21
Battleships at Jutland battle, V, 80
Bavarians, bravery of, at Eaucourt, VI, 30
Beatty, Admiral, movements at Jutland naval battle, V, 75-78
Beaucourt, attacks on, VI, 218
Beaumont, abandonment of, by French, IV, 142
Belgian coast, bombardment of, by British fleet, IV, 60, 112
Belgian neutrality, I, 276
Belgian neutrality, unity of powers, I, 476
Belgian territory, alleged violation of, I, 283
Belgian envoys, visit of, to United States, VI, 352
Belgian withdrawal, IV, 40
Belgium, American lessons from, I, 12
Belgium appealed to powers guaranteeing neutrality, I, 384
Belgium, area of, I, 287
Belgium, location of, I, 197
Belgium, attacks in, July, VI, 279
Belgium, German attacks on the French lines in, VI, 250
Belgium, operations in, VI, 61
Belgium, German proposals to, I, 281
Belgrade, bombardment of, IV, 265
Belgrade, capture of, II, 347, 353
Belgrade, riot following assassination of crown prince, I, 346
Benckendorff, A., I, 320
Berchtold, L., I, 324
Berlin, Treaty of, I, 228
Bernhardi, I, 83
Bertie, Sir Francis, I, 317
Bethlehem, efforts to start munition strikes in, V, 9
Bethmann-Hollweg, I, 323
Bethmann-Hollweg, circular letter to powers, I, 368
Bethmann-Hollweg's statement in Reichstag, I, 498
Beyers, General, III, 70
Bieberstein, Marshal von, II, 496
Bight, Battle of, II, 208
Bismarck Archipelago, II, 243
Bismarck, growth of power of, I, 127
Bismarck, retirement of, I, 134
Bitlis, massacre at, IV, 378
Bitlis, occupation of, by Russians, V, 293
Blockade against Germany, III, 181
BlÜcher, sinking of, II, 255
Bolimow, fighting around, II, 470
Bombs in trenches, I, 74
Bosnia, annexation of, I, 147
Bosnia, fighting in, II, 360
Botha, General, III, 74
Boy-Ed, Karl, activities, V, 14
Brabant, abandonment of, by French, IV, 140
Bregalnitza, battle of, I, 257
Bremen, exploits of, VI, 190
Brenta River, fighting along, V, 278
Brescia, bombardment of, IV, 468
Breslau, II, 494
Brest-Litovsk, II, 447
Brest-Litovsk, capture of, IV, 196
Briand, resignation of, I, 170
British in Macedonia, VI, 135
British advance on Arras, VI, 251
British aerodromes, IV, 473
British air raids, IV, 18
British, mobilization of, I, 304
British attack around Lens, IV, 82
British attacks on the Stuff Redoubt, VI, 49
British attacks on Zeebrugge, VI, 482
British cabinet declaration, I, 473
British declaration of war against Germany, I, 283
British East Africa, I, 180
British Empire, area of, I, 286
British expeditionary force, II, 34
British expeditionary force landing in France, IV, 40
British fleet shells Zeebrugge, V, 67
British forces, disposition of, V, 380
British and French offensive, VI, 27
British and French successes, VI, 17
British gains on the Somme, VI, 14
British guns at Gallipoli, IV, 359
British losses at Jutland naval battle, V, 94-98
British losses to 1916, IV, 117
British navy, effect on war, I, 18
British offensive in Artois, IV, 82
British operations south of the Ancre, VI, 39
British policy of isolation, I, 42
British position, August 1, 1915, IV, 46
British position in Persia, IV, 419
British prize court, proceedings, effect of, in United States, V, 32
British raids on the German trenches, VI, 32, 39, 57
British reverses in Belgium, VI, 281
British seizure of ships of American registry, V, 49
British shipping, loss to, IV, 170
British squadron bombards Belgian coast in November, 1915, IV, 112
British statement in regard to Greece, IV, 312-313
British successes in Artois, IV, 85
British successes near Ypres, VI, 264
British at Jutland battle, V, 98-104
British troops on the Ancre, successes of, VI. 224
British troops, suffering of, at Kut-el-Amara, V, 320
British use of tanks, VI, 21
Brody, battle near, IV, 204
Bruges, occupation of, II, 168
Brussels, surrender of, II, 31
Brussilov, in Galicia, V, 167
Bryan, William Jennings, connection with peace propaganda, VI, 295
Buchanan, Sir George, interview with Sazonof, I, 376
Bucharest, capture of, VI, 119
Buczacz, capture of, by Russians, V, 160
Bukoba, capture of, III, 494
Bukowina, operations in, IV, 227
Bukowina, Russian occupation, III, 238
Bukowina, Russian reconquest of, V, 162-172
Bulgar attacks on Rumania, VI, 98-102
Bulgaria, after second Balkan war, I, 257
Bulgaria, conditions for neutrality, IV, 257
Bulgaria, position of, III, 370
Bulgarian army, IV, 270
Bulgarian bombardment of Galatz, VI, 121
Bulgarian declaration of war on Serbia, IV, 269
Bulgarian demands, III, 378
Bulgarian movements in Serbia, IV, 305
Bulgarian pursuit of Serbians, IV, 209
Bulgarians cross Greek frontier, V, 221
Bulgarians, defeat of, in November, 1916, VI, 138
Bullecourt, occupation of, VI, 261
Burian, Baron, letter of Ambassador Dumba proposing munition strikes in United States, V, 9
Bzura, battle along, II, 492

Cadorna, General, III, 404
Caillette Wood, German repulse at, V, 354
Calais, air raids on, IV, 24
Calais, bombardment of, by destroyer flotilla, VI, 482
California, destruction of, VI, 292
Cambon, J., I, 328-330
Cameroons campaign, III, 62, 481
Campbell-Bannerman, Sir, I, 185
Canadians at Arras, VI, 56
Canadians' capture of Vimy, VI, 241
Canadians, raids by, VI, 222
Candler, Edmund, description of operations in Mesopotamia, IV, 448
Canopus, sinking of, II, 223
Carency, surrender of, III, 125
Carinthian front, bombardment by Italian artillery, V, 230
Carlos I, murder of, I, 204
Carnic Alps, conditions in, V, 289
Carpathian fighting, VI, 91, 442
Carpathian Mountain passes, advance of Russians toward. V, 207
Carpathian Mountains, II, 275
Carpathians, campaign in, III, 235-241
Carso Plateau, attack on, by Italian artillery, VI, 155, 464
Castelnau, General de, II, 43
Catholics, movement against, in France, I, 163
Cattaro, bombardment of, II, 359
Caucasus, campaign in, IV, 380
Caucasus, operations in, III, 9
Caucasus, reasons for Russian offensive against, IV, 382
Caucasus, the, II, 286
Cavell, Edith, case of, IV, 98-101
Central powers, area of, I, 286
Central powers, homogeneity of, I, 291
Central powers, military plans of, I, 33
Central powers, position of, on the eastern front, V, 117-121
Champagne campaign, IV, 62
Champagne, French in, VI, 249
Champagne, German attacks in, March, 1917, VI, 230
Champagne offensive, IV, 61
Charleroi, battle of, II, 54-59; IV, 40
Charles Francis Joseph, Archduke, V, 249
Chemistry in war, I, 11
Chicago meat packers' cases, V, 47
Chino-Russian treaty, I, 154
Church and State, separation of, I, 168
Churchill, Winston Spencer, V, 61
"Circular Note" to powers, I, 270
Citizen soldiery, training of, I, 12
City of Memphis, sinking of, VI, 317
Climate in Mesopotamia as a factor in war, IV, 421
Col di Lana, attack on, V, 231
Collo, Italian successes in, IV, 413
Colonial beginnings of Germany, I, 133
Colonial possessions of Great Britain, I, 174
Combes, I, 167
Combles, British attack on, VI, 26
Combles, repulse of German attack on, VI, 18, 25
Concentration camps, VI, 350
Confederation of North German States, I, 128
Congress, American, McLemore resolution in, IV, 505
Congress, opposition of, to President Wilson's policies, VI, 306
Congress, war discussion in, V, 433-438
Constantine of Greece, IV, 341
Constantinople, operations in, IV, 475
Constanza, attacks on, VI, 110
Contalmaison, capture of, V, 397
Cossacks, II, 383
Cossacks, repulse of Turkish troops by, V, 303
Cotes de Meuse, attack at, V, 348
Council of Workingmen and Soldiers, VI, 405-410
Courcelette, capture of, by the British, VI, 23
Courland coast, bombardment of, by Russian torpedo boats, V, 194
Courland, invasion of, III, 337
Courland, operations in, IV, 185
Cracow, attack on, II, 414-416
Craiova, capture of, VI, 114
Craonne, capture of, VI, 256
Craonne, German attacks on, VI, 252
Craonne sector, operations around, July, 1917, VI, 282
Ctesiphon, battle of, IV, 437-443
CumiÈres, German attempts to retake, V, 347
Curtain of fire, I, 74
Cyril, Grand Duke, II, 486
Czar of Russia, escape from aeroplane bomb, V, 429
Czarina, influence of, VI, 373
Czernowitz, capture of, V, 169
Czernowitz, retreat at, II, 413

Dankl, retreat of, II, 392
Danube, Rumanian raid across the, VI, 102-111
Dardanelles, aeroplanes at, I, 23
Dardanelles campaign, abandonment of, reasons for, IV, 363
Dardanelles, naval attacks, III, 174-179
Dates, important, I, 325-329
Death's Head Hussars, II, 154
Delarey, General, III, 73
DelcassÉ, ThÉophile, I, 319
DeniÉcourt, capture of, VI, 26
Denman, William, controversy with General Goethals, VI, 343
Destroyers, achievements of, I, 17
Deutschland, V, 111-112
De Wet, General, III, 70
Diarbekr, struggle for, V, 299-306
Diplomacy in the Balkans, I, 59
Diplomatic exchanges, first, I, 322
Diplomatic papers, I, 313
Disraeli, I, 179
Dixmude, III, 166
Dixmude, British and French attacks at, VI, 287
Dixmude, German attack on, IV, 87
Djemel Pasha, II, 500
Doberdo, operations along, V, 232
Dobrudja, operations in, VI, 101
Dobrudja, situation in, October, 1916, VI, 109, 112
Dolomite district, Italian successes in, IV, 397
Dolomite passes, fighting in, III, 393
Dolomites, operations in, V, 243
Douai, aeroplane attack on, IV, 474
Douaumont, French attempts to retake, V, 363
Douaumont, French recapture of, VI, 34
Douaumont, German attack at, V, 344
Dresden, German raider, III, 182
Dreyfus affair, I, 165
Dubno, fortress, capture of, V, 161
Dubno, fortress, strength of, IV, 210-211
Dukla Pass, fighting at, III, 261
Duma, defiance of czar by, VI, 389
Duma, disturbance in, VI, 394
Duma, inability of, to meet crisis, VI, 392
Duma, meeting of, in 1916, VI, 383
Dumba, Dr., explanation of efforts to V, 9
Dumba, Dr., recall of, by Austro-Hungarian government, V, 11
Dunajec, battle of, III, 267, 273
Dunkirk, bombardment of, by German destroyers, VI, 482
Durazzo, Austrian capture of, IV, 328
Durazzo, evacuation of, IV, 414
Dvina, crossing, by Russians, VI, 89
Dvina, Russian attempt to cross, VI, 80
Dvinsk, fighting around, IV, 213
Dvinsk, fortress, strength of, IV, 214
Dvinsk, Russian bombardment around, V, 143

E-13, British submarine, IV, 153
Eastern battle front, conditions in spring of 1916, V, 116
Eastern front, winter on the, IV, 250-254
Eastern front, winter on the, VI, 93, 121-124
East Prussia, devastation in, winter battles in, III, 313, 317
Eaucourt l'Abbaye, British capture of, VI, 28
Edea, capture of, III, 67
Edward VII, I, 182
Effectiveness, naval, I, 19
Egypt, attack on, III, 15
Egypt, Turkish attack on, III, 507
El Kantara, fighting at, IV, 10
Emden, career of, II, 226
Emden, story of, III, 193-205
Emmich, General von, II, 18
England, air raids on, IV, 21
England, east coast, attacked by German Zeppelins, II, 460
Enver Pasha, II, 499
Epine de Vedegrange sector, movements in, IV, 68-70
Erzerum, beginning of Russian advance toward, IV, 383
Erzerum, evacuation of, IV, 389
Erzerum, operations around, III, 9
Erzerum, Turkish losses at, IV, 391
Erzerum, Turkish plan for defense of, IV, 387
Erzingan, capture of, by Russians, V, 339
Erzingan, Russian advance, V, 294
Espionage Bill, divisions of, VI, 338
Explosions at Messines, VI, 267
Explosives, quantity of, I, 68
Exports, embargo on, VI, 341
Eydtkuhnen, attack on, III, 317