Volume I includes maps of: General Positions of the German Western Armies at the Outbreak of the War - First Plan of Concentration of the Five First French Armies; General Positions of the German Western Armies on 5 AUG 1914 - Second Plan of Concentration of the Five First French Armies; Position in Belgium on 11-17 AUG; Grand Couronne of Nancy and the Trouee or Gap of Mirecourt; French Advance in Alsace and Lorraine, and Its Utmost Limit on 20 AUG; German Effort against the Trouee or Gap of Mirecourt, and Its Uttermost Limit on 24 AUG; Kluck's Advance from Brussels on 21-22 AUG; Battle of the Ardennes, 21-22 AUG; Battle of Mons-Charleroi - Position on 22-23 AUG; Battle of Mons-Charleroi - Position on 24 AUG (morning); Battle of Cambrai, 26 AUG; General Position of Armies on 26 AUG; General Position of Armies on 30-31 AUG; Grand Couronne of Nancy; Extreme Limit of Great Retreat - General Position of Western Armies in France; Battle of the Ourcq - First Day, 6 SEP; Battle of the Ourcq - Third and Fourth Days, 8-9 SEP; Battle of Fere Champenoise - Hausen's Attacks, 7-8 SEP - Battle of Fere Champenoise - Foch's Counterattacks, 9 SEP; Battle of Verdun - Position on 8-9 SEP and 10-11 SEP; End of German Retreat from the Marne - Position of Western Armies in France on or About 12-13 SEP 1914. Volume II includes maps of: First Phase of the Russian Campaign, AUG-SEP 1914; Battle of Tannenberg, 26-28 AUG; Second Battle of Louvain, 10-12 SEP - Advance of the Begians; Second Battle of Louvain, 12-13 SEP - Retreat of the Belgians; General Position in France after the German Retreat from the Marne; Battle of St. Mihiel, 20 SEP; Battle of St. Mihiel, 23-24 SEP; Battle of St. Mihiel, 24-25 SEP; German Attacks on the Center of the Allied Line between 19 and 26 SEP; Castlenau's Flanking Movement; General Position in Belgium and Northern France between 3 and 6 OCT; Operations in Flanders between 9 and 16 OCT; French's Pivoting Movement - General Position on 11-13 OCT; French's Pivoting Movement - General Position on 13-15 OCT; End of French's Pivoting Movement - General Position on 16 OCT; Siege Fronts in France in OCT 1914; Battle of the Yser, 16-31 OCT; Various Commands in Northern France and Belgium Composing the Left Wing of the Allies, OCT-NOV 1914; Battle of the Ypres - General Position on 16-20 OCT; Battle of the Ypres - General Position on 21-24 OCT; Battle of the Ypres - General Position on 30-31 OCT; Battle of the Ypres - General Position on 11-12 NOV. Volume III includes maps of: General Position on Galician Frontier on 20-22 AUG 1914; General Position on Galician Frontier on 23-26 AUG 1914; Position in Galicia on 5-12 SEP - Battles of Lemberg and of Rawaruska; Limit of First Russian Offensive in Galicia, SEP-OCT 1914; First Austro-German Offensive in Poland - General Position on 26-27 SEP; Limit of Austro-German Offensive on 3-4 OCT; Mackensen's Stroke at Lodz, 20-21 NOV 1914; German False Attacks and Secret Concentration on Their Eastern Front in the Spring of 1915; Mackensen's Stroke at Gorlice, 4-9 MAY 1915; Operations in Belgium and Northern France, Showing the Railway Lines; Battle of Soissons, 9-14 JAN 1915; Battle of Neuve Chapelle, 10-14 MAR 1915; Operations of the 10th French Army in Artois in APR-MAY 1915; Operations in North Central France in 1915 and Showing Main Railway Lines; Second Battle of Ypres, 1915 - Position after the First German Attack, 24 APR; Second Battle of ypres, 1915 - Position in MAY after the Allies' Countermoves and the Readjustment of Their Line; Operations in Eastern France in 1915; Situation on the Russian Front, after the Retreat from Galicia, and the German Attempts to Crush the Russian Centre between the Vistula and the Bug; Limit of the Russian Retreat, End of SEP 1915; British and French Attacks in Artois, SEP 1915 - Position on 23-24 SEP; British and French Attacks in Artois, SEP 1915 - Position on 27-28 SEP; French Offensive in Champagne, SEP 1915 - Positions on 25 and 27 SEP; Battle of Verdun, 1916 - Positions at the Opening of the German Attacks, 21-22 FEB; Battle of Verdun, 1916; Positions at the Opening of the French Countermovement, 23-25 FEB; Battle of Verdun, 1916 - Position on 26 FEB-4 MAR. Volume IV includes maps of: Military Position in Serbia at the Opening of Hostilities, JUL-AUG 1914, and the First Plan of Concentration of the Serbian Army; Battle of the Jadar; Serbian Deconcentration Movements after the Battle of the Jadar; Position in Serbia during the Battle of the Kolubara; Serbian Withdrawal Movement, DEC 1915; General Seat of Action of the Italian and Austrian Armies; General Lines of the Austrian and Italian Operations in MAY-JUN 1916; Scene of the Austrian and Italian Operations in the Trentino in MAY-JUN 1916; Zone of the Operations of the 3rd Italian Army in 1915-1916; Situation in France during the German Attacks at Verdun in 1916; Railway Communications for the Verdun Region; Zones of the German Battle-concentration in the Verdun Region in APR-MAY 1916; Extension of the British Front during the Verdun Operations; Operations on the Russian Front during the Brussiloff Campaign; zone of Russian Offensive Siege Operations in JUN-SEP 1916; Zone of Operations in Macedonia in 9116; General Plan of the Rumanian Operations; Extension of the Russian Front during the Rumanian Campaign; French and British Concentrations in JUN-JUL 1916 for the Operations on the Ancre and the Somme; French Attacks in the Verdun Sector during the Operations on the Somme.