Macedonian Front:—Strumnitza is occupied by the British.
Sept. 27 (Fri.)
The Battle of Cambrai and the Hindenburg Line begins (see Oct. 5): the British attack in front of Cambrai, break through the Hindenburg defences, and capture Beaucamp, Graincourt, Bourlon Wood, and other important positions, with over 10,000 prisoners and 200 guns.
The Argonne Front:—The Americans and French make further progress; the number of prisoners to date exceeds 23,000.
Palestine Front:—Arab forces capture Deraa.
Sept. 28 (Sat.)
The Fourth Battle of Ypres: the Belgians attack from Dixmude to Ypres, the British from Ypres to Ploegsteert; very rapid progress is made by the Belgians, who capture the whole of Houthulst Forest; the British advance on their right beyond the furthest points reached by them in 1917.
The Argonne Front:—The French capture Somme-Py and Maure; the Americans reach Brieulles and Exermont.
Sept. 29 (Sun.)
The British capture Messines and the Messines Ridge; Dixmude is occupied by the Belgians; the Allied front is carried to the neighbourhood of Roulers, Courtrai, and Menin, an important salient being thus driven into the enemy's northern front which endangers his positions on the Belgian coast: this ends the Fourth Battle of Ypres.