Allied offensives continue in France; the Second Battles of the Somme and Arras officially end on 3 Sepetember

1 British forces recapture Peronne

2 Offensive phase known as the Battle of the Drocourt-Queant Line begins; ends 3 September

2 Italian contingent joins Allied Expeditionary Force at Murmansk in North Russia

3 British force capture Lens

3 United States government recognises Czech-Slovak people as having a de facto government

4 Allied forces seize Oberseskaya in North Russia

4 United States contingent joins Allied Expeditionary Force at Murmansk in North Russia

5 Japanese forces capture Khabarovsk in eastern Siberia

11 Allied forces seize Ukhtinskaya in North Russia

12 United States forces in France begin offensive known as Battle of St Mihiel: their first large-scale operation

12 Offensive phase known as the Battle of the the Hindenburg Line (lasts to 9 October) begins with the Battle of Havrincourt

14 British begin to evacuate Baku on Caspian Sea

15 Allied offensive operations begin in Macedonia with the Battle of Dobropolje

16 German aeroplane raid on Paris - turns out to be the last of WW1

16 Large explosion in Dover harbour as HMS "Glatton" blows up. Reports vary but at least 57 and possibly as many as 80 die on board

18 The continuing Battle of the the Hindenburg Line moves into next phase, the Battle of Epehy

18 Japanese forces capture Blagoveschensk in eastern Siberia

18 Allied offensive operations expand in Macedonia with the Battle of Monastir-Doiran: ends 24 September; Doiran is occupied on 22 September

19 In campaign in Palestine, Allied forces begin offensive operations in Battles of Megiddo (ends 25 September), Sharon and Nablus

20 British cavalry capture Nazareth and Beisan in Palestine

23 Haifa, Acre and Es Salt in Palsetine are all occupied by British forces

23 French forces capture Prilep in south Serbia

23 Turkish garrison abandons Ma'an on the Hejaz railway in Arabia

25 Serbian forces recapture Ishtip and Veles

25 British cavalry cut the Hejaz railway at Amman

25 Italian government recognises independent Yugoslav state

26 French, Italian and United States forces begin offensive operations in the Battles if the Champagne and Argonne

27 The continuing Battle of the the Hindenburg Line moves into next phase, the Battle of the Canal du Nord

27 Bulgarian government asks Allies for an Armistice

28 British and Belgian forces begin offensive operations in Flanders: they break out of the Ypres salient with relatively few casualties and war in Flanders becomes one of movement again. Messines is recaptured, and Passchendaele and Diksmuide on 29 september

29 The continuing Battle of the the Hindenburg Line moves into next phase, the Battle of the St Quentin Canal: one of the finest feats of arms as British forces cross canal at Riqueval

29 Turkish garrison of Ma'an surrenders near Amman

29 German force in East Africa recrosses River Rovuma and re-enters German territory

30 Bulgarians cease fighting and sign Armistice: hostilities cease at noon

30 Canadian contingent joins Allied Expeditionary Force at Archangel in North Russia