Odessa, bombardment of, VI, [493]
Olti, battle of, III, [478]
Ortelsburg, capture of, II, [437]
Oslavia Heights, capture, IV, [408]
Ossowitz, bombardment of, III, [328]
Ostend, raids on, IV, [56]; VI, [173]
Otavi, battle of, III, [490]
Palembang, Dutch steamer, V, [62]
Palmer, Frederick, the world's war, I, [31]
Pan-Slavism, I, [153]
Paris, air raids on, IV, [19], [462]
Paris, arrival of American troops in, VI, [360]
Paris, siege of, I, [129]
Pashitch, N. P., I, [321]; IV, [289]
Passes, battle of, III, [241]-244
Peace of Tilsit, I, [84]
Pégoud, Alfonse, IV, [50]
Pepper Hill, successes at, V, [358]
Persia, interests in, I, [185]
Persia, British position in, IV, [419]
Péronne, V, [390]; VI, [232]
Pershing, General John J., commander of the American expeditionary force, VI, [356]
Persia, destruction of, negotiations over, IV, [500]
Persia, British steamship, sinking of, IV, [157]
Persian Gulf, importance of, II, [505]
Perthes, III, [79]; IV, [72]
Pétain, General, report on operations at Verdun, V, [358]
Peter, King of Serbia, IV, [290], [302]
Pinsk, IV, [205], [207]
Pinsk marshes, Russian successes in, V, [197]
Poland, campaigns in, II, [462]; III, [345]
Poland, Austrian, II, [272]
Political situation in Ireland, I, [43]
Political conditions in Germany, I, [53]
Portugal, sinking of, V, [64]
Portuguese seizure of German merchant ships, V, [60]
Power of Bismarck, growth of, I, [127]
Powers, Central, military plans of, I, [33]
Pourtalès, F., I, [323]
Pozières, bombardment of, VI, [11]
Pozières Wood, advance on, V, [407]
Prinz Eitel Friedrich, German raider, III, [179]
Prinzip, Gabrilo, I, [260]
Pripet Marshes, IV, [209]
Pripet Marshes, operations in, V, [152]; VI, [81]
Pro-German propaganda in United States, IV, [505]
Protopopoff, treason of, VI, [388]
Provisional Government in Russia, VI, [398]
Prussian alliance with Italy, I, [127]
Przasnysz, battles of, III, [324]
Przemysl, II, [249], [405]; III, [324]
Radautz, capture of, V, [183]
Radoslavov, Premier of Bulgaria, III, [372]
Ramsgate, air raids on, IV, [26]
Rancourt, capture of, VI, [27]
Rasputin, VI, [374]-377, [385]
Rawa-Russka, battle of, II, [395]
Régime, new, in Russia, VI, [404]
Reichstag, Bethmann-Hollweg's statement in, I, [502]
Rennenkampf, General, II, [443]
Revolution in Russia, VI, [390]
Rheims, bombardment of, II, [146]-153; III, [152]-154; VI, [237]
Rhodesia, border fighting in, III, [495]
Rifles used in different armies, I, [26]
Riga-Dvinsk sector, V, [125], [128], [204]
Riga, Gulf of, Russian torpedo boats in, V, [151]
Rockwell, Kiffin, death of, VI, [181]
Rodzianko, Michael, VI, [391]
Roosevelt, Theodore, efforts to take troops to France, VI, [335]
Root, Elihu, arrival of, in Russia as American Commissioner, VI, [417]
Rovereto, Italian attack on, IV, [396]; V, [244]
Rovno fortress, strength of, IV, [212]
Royal British Corps, loss in, V, [425]
Royal Edward, sunk, IV, [149]
Rozau, capture of, III, [361]
Ruhl, Arthur, the war correspondent, I, [113]
Rumania, III, [370]; VI, [93]-96
Rumania, neutrality of, IV, [256]
Rumanian raid across the Danube, VI, [106]-110
Russia and Great Britain in Persia, I, [185]
Russia and Japan, V, [61]
Russia and the Near East, I, [153]
Russia in European politics, I, [148]
Russian advance on the eastern front, V, [120]
Russian mobilization, I, [306]
Russian army, rehabilitation of, VI, [428]
Russian artillery activity, V, [134]
Russian attempts to extend time limit for hostilities, I, [385]
Russian autocracy, VI, [364]
Russian defeat, effect of, IV, [364]
Russian disorganization, VI, [422]
Russian fleet, mutiny, VI, [414]
Russian foreign policy, I, [151]
Russian internal troubles, I, [155]
Russian losses in August, 1915, IV, [202]-203
Russian mobilization, I, [405]
Russian offensive, VI, [431], [440]
Russian offensive in the East, V, [154]
Russian offensive, temporary lull in, V, [188]-192
Russian people and German diplomacy, I, [56]
Russian persecution of Jews, I, [153]
Russian Poland, II, [268]
Russian pursuit of Turks, V, [292]
Russian retreat, IV, [229]-239
Russian revolution, foreshadowing of, VI, [363]-365
Russian rout in Galicia, VI, [445]-447
Russian troops in Rumania, VI, [97]
Russian troops on the Black Sea coast, V, [61]
Russia's attitude on Serbia, I, [377]
Russia's strategy in East, II, [433]
Russky, General, II, [377]
Russo-German treaty, I, [319]
Russo-Japanese War, I, [155]
Russo-Turkish War, I, [132]
Saarbrücken, bombardment, IV, [48]
St. Julien, assaults on, III, [102]
St. Mihiel, salient, attacks on, III, [116]
Sakharoff, General, V, [205]
Salandra, I, [322]
Salisbury, Marquis of, I, [179]
Saloniki, II, [284]; IV, [261], [321]; V, [215], [429]
Saloniki, German air raid on, V, [216]
Saloniki, importance of, I, [61]
Saloniki, Allies at, IV, [261]
Samogneux, abandonment of, by French, IV, [137]
Samsonoff, General, II, [436]
San, battle of, III, [297]-301
San, battles of the, II, [398]
San Stefano, treaty of, I, [227]
Sarafoff, Boris, I, [242]
Sarajevo, I, [260]; II, [277]
Sari Bair, attack on, IV, [348]
Sarrail, General, commands French troops in Balkans, IV, [279]; V, [215]
Sazonov, Russian Minister, VI, [380]
Scarpe River, operations on, VI, [253]
Scarborough, raids on, II, [247]
Schiller, Ernest, V, [65]
Schleswig-Holstein, war for, I, [127]
Sea command and troop transportation, I, [24]
Selective Draft Law, VI, [346]
Semendria, bombardment of, IV, [269]
Serbia, invasion of, II, [301]; IV, [177]
Serbia, offers of peace, III, [376]
Serbian retreat to Albania, IV, [303]
Serbian army, strength of, in November, 1915, IV, [293]-294
Serbian nationality, I, [258]
Serbian reply to Austrian note, I, [265]-270
Serbian resistance at Babuna Pass, IV, [283]
Serbian troops, transport across Greek territory, V, [218]
Serbians in Macedonia, VI, [132]
Sereth River, crossing by Russian forces, V, [178]
Servetsch region, V, [146]
Sette Comuni Plateau, Italian successes on, V, [270]
Shabatz, battle of, II, [317]
Shevket Pasha, I, [244]
Shipbuilding program, VI, [343]
Shipping Board, creation of, VI, [213]
Shipping, neutral loss of, IV, [170]
Ships of American registry, seizure by British, V, [49]
Shumadia division of Serbian army, heroism of, IV, [275]
Sibert, General, with American expeditionary force, VI, [357]
Siege of Paris, I, [129]
Simonds, Frank H, summary of two years of war, V, [461]-502
Simonds, F. H., the theatres of the wars' campaigns, I, [83]
Sims, Admiral, commander of American destroyer flotilla, VI, [357]
Smith-Dorrien, General, II, [60]
Smoke screen, I, [74]
Smorgon, fighting around, V, [179]
Smorgon, operations around, VI, [80]
Soissons, operations around, V, [376]
Soldau, capture of, II, [437]
Somme, British, and French offensive on the, VI, [27]
Somme, battles of, beginning, V, [377]
Somme, conditions in situation south of, on July 9, V, [399]
Somme front, French and British gains, VI, [19]
Somme offensive, German casualties in the, VI, [9]
Somme offensive, object of Allies in, V, [377]
Somme offensive, spring of 1916, VI, [9]
Somme, second phase, V, [401]
Souain sector, IV, [71]-72
Souchez, attacks on, III, [124]-125
Souchez, Canadian raids at, VI, [222]
Souchez, French attack on, IV, [84]
Southwest Africa, British conquest of, III, [484]-493
Souville, attacks on, V, [368]
Spee, Admiral von, II, [230]
Speed plane, in warfare, V, [421]
Stambuloff, I, [233]
Stanislau, operations around, VI, [435]
Stanislau, advance on, V, [193]; VI, [72]
Steenstraete, capture of, VI, [287]
Stokhod River, V, [198]-207; VI, [76]-81, [423]
Strikes in munitions factories, planned by Germans, V, [10]
Strypa River, fighting along, IV, [223]-229
Strypa River, Russian artillery attacks along, V, [138]
St. Mihiel, French gains, VI, [231]
St. Quentin, VI, [236]
Stuff Redoubt, VI, [32], [49]
Sturmer Boris, VI, [379]
Stuttgart, bombardment of, by French aviators, IV, [60]
Styr River, IV, [223]-229; V, [178]
Submarine attacks on American transports, VI, [358]
Submarine campaign, IV, [116]
Submarine campaign against merchant ships, V, [59]
Submarine, detecting, I, [21]
Submarine, effectiveness of, I, [19]
Submarine, efficiency of, IV, [145]
Submarine negotiations, VI, [193]
Submarine warfare, III, [209]-222
Submarine warfare, VI, [182]-188
Submarine warfare in 1917, VI, [475]
Submarine warfare on armed merchantmen, IV, [499]
Submarines, aeroplane warfare on, V, [414]
Suchomlinof, V. A., I, [320]
Suez Canal, defenses of, III, [18]-19; IV, [11]
Summary of first year's operation on western front, IV, [39]-46
Sussex, sinking of, V, [63], [443]
Suvla Bay, IV, [346]-356
Suwalki, occupation of, II, [448]
Talaat Bey, II, [499]
Tanks, VI, [21], [46]
Tannenberg, battle of, II, [438]
Tarnow, battles around, III, [286]
Tergovistea, capture of, by Austro-Germans, VI, [117]
Terrorism in Russia, I, [153]
Thiepval, British successes around, VI, [17]
Tigris River, IV, [426]; V, [326]-330
Tigris valley, campaign in, V, [307]
Tilsit, peace of, I, [84]
Togoland, campaign in, III, [62]
Townshend, General, V, [311]
Trade, foreign, of Germany, I, [49]
Transloy, British successes at, VI, [65]
Transportation of troops, I, [24]
Transports, protection of, I, [18]
Trans-Siberian Railway, I, [153]
Trebizond-Erzerum road, V, [299]
Trebizond, occupation of, V, [297]
Trench bombs, I, [76]
Trench fighting, I, [68]
Trentino, Austrian offensive in, V, [244]-255
Trentino front, VI, [154], [455]
Trieste, Italian drive, VI, [159], [452]
Triple Alliance, I, [133], [141]
Triple Entente, formation of, I, [158]
Trônes Wood, V, [402]-403
Troops, transportation of, I, [24]
Tsing-tau, defenses, attacks on, capture, III, [48], [52], [60]
Tubantia, Dutch steamer, V, [62]
Turkey, American relations with, VI, [328]
Turkish navy, operations of, IV, [170]
Turkish troops on the eastern front, VI, [83]
Typhus, epidemic of, II, [356]; III, [475]
Uganda, protectorate, I, [180]
Undersea warfare, IV, [155]
Unification of Germany, I, [130]
Union of South Africa, rebellion in, III, [70]
United States, development of pro-German propaganda in, IV, [505]
U-53, exploits of, VI, [194]
Union of Towns in Russia, VI, [377]
Van, concentration of Armenians in, IV, [378]
Van, Russian successes in, III, [477]
Vaux, French defense of, V, [351], [367]
Vaux Fort, French recapture of, VI, [37], [39]
Veles, resistance at, by Serbians, IV, [278]
Venice, air raids on, III, [426]; VI, [169]
Venizelos, attacks of, on Greek Government, IV, [311]
Venizelos, E., I, [60]; V, [217]
Verdun, attack on, I, [64]
Verdun, effect of five months' siege, V, [371]
Verdun, French victories at, VI, [54]
Verdun, operations around, VI, [19], [53], [281]
Verdun, struggle for, IV, [131]-142
Victor Emmanuel, address to army, V, [254]
Victor Emmanuel III, I, [194]
Vienna, congress of 1814, I, [260]
Vigilancia, sunk, VI, [318]
Vilna, campaign against, IV, [187], [192]
Vimy Ridge, capture of, VI, [239]
Viviani, René, I, [318]
Viviani, instruction to French ambassador at Vienna, I, [379]
Volhynia, Austrians in, V, [138]
Von Bernstorff, note to Secretary Lansing in reply to Lusitania protest in Germany, IV, [485]
Von Bethmann-Hollweg, IV, [485]
Von Bülow, Prince, I, [136]
Von Caprivi, General, I, [134]
Von Jagow, interviews with, I, [33], [502]
Von Mackensen, commands German forces in Serbia, IV, [258]
Von Papen, recalled, V, [26]
Von Plehve, murder of, I, [156]
Von Rintelen, Franz, V, [22]-28
Von Tirpitz, Grand Admiral, attitude toward submarine warfare, IV, [484]
Vosges, German activities in, IV, [51], [108]
Vulkan Pass, capture of, by Germans, VI, [103]
War, German declaration of, I, [278]
War, declaration of, between United States and Germany, VI, [325]
War Revenue Bill, VI, [333]
War zone, establishment of, III, [170]
Warsaw, attack on, II, [450]
Warsaw, capture of, III, [366]-368
Warsaw, movements upon, III, [346]
Warsaw, occupation of, IV, [178]
Washburn, Stanley, on conditions on eastern front, V, [180]-183
Western front, summary of first year's operations on, IV, [39]-46
Western front on February 1, 1916, IV, [126]
What the war means to America, I, [9]
Whitby, raids on, II, [247]
Whitlock, Brand, efforts to aid Miss Cavell, IV, [100]-101
William II, accession of, I, [134]
Wilson, President, address before Congress, April, 1917, VI, [320]-326
Wilson, President, on armed neutrality before Congress, VI, [304]
Wilson, President, and British blockade of Germany, V, [457]
Wilson, President, and Congress, V, [434]
Wilson, President, denouncement of unpatriotism, V, [26]
Wilson, President, letter to Congress, IV, [503]
Wilson, President, note to Russia, VI, [415]
Wilson, President, proclamation convening Congress, VI, [319]
Wilson's address on relations with Germany, VI, [210]
Windhoek, capture of, III, [489]
Wood, Major General Leonard, what the war means to America, I, [9]
Yarmouth, raids on, II, [246]
Yarrowdale, prisoners, VI, [297]
Younghusband, General, IV, [446]
Yperlee Canal, III, [107]
Ypres, attack on, II, [171], [172], [174]
Ypres, bombardment of, III, [95]
Ypres, British successes south of, VI, [264]
Ypres, first battle of, IV, [44]
Ypres, German success at, in February, 1916, IV, [122]
Ypres, second battle of, III, [99]-106
Ypres sector, operations in, in March, 1916, V, [372], [375]
Yser, II, [169]; III, [167]; IV, [122]
Yser region, flood in, IV, [117]
Zanzibar, I, [180]
Zeebrugge shelled, V, [67]; VI, [482]
Zeppelin attack on Warsaw, IV, [19]
Zeppelin, Count Ferdinand, death of, VI, [494]
Zeppelin raids on England, IV, [16], [466]; V, [422]; VI, [494]
Zeppelin, value of, V, [412]
Zeppelins, loss of, IV, [468]; V, [430]; VI, [179]
Zugan Torta, V, [247]
Zungar Valley, V, [247]