The Battle of Amiens begins (see Aug. 12): the 4th British Army (Rawlinson) and the 1st French Army (Débeney) attack, aided by tanks, on a front of twenty miles east of Amiens (both armies under the command of Sir D. Haig), from the neighbourhood of Morlancourt, north of the Somme, to Braches, on the Avre; the German lines are deeply penetrated and 400 guns and over 16,000 prisoners captured. The advance attains a maximum depth of seven miles.
Aug. 9 (Fri.)
The Franco-British advance proceeds: the British capture Rosières; the French capture Pierrepont and reach Arvillers; the battle-front extends southwards, the French attacking below Montdidier with their 3rd Army (this marks the beginning of the Second Battle of Lassigny; see Aug. 15).
The Lys Front:—The Germans evacuate a number of positions; the British advance between Merville and Locon to a depth of over a mile.
The Rheims—Soissons Front:—The Americans capture Fismettes.
Aug. 10 (Sat.)
The Franco-British advance continues on the whole front from the Ancre to south of Montdidier; the British capture Rainecourt, Méharicourt, and Bouchoir; the French capture Montdidier.
Aug. 11 (Sun.)
The Allies make fresh progress, particularly between the Avre and the Oise.
Japanese contingents land at Vladivostok.