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This Month in World War I |
| Theatres | ||
|---|---|---|
| Western | Eastern | Italian |
| Caucasian | Middle Eastern | Balkan |
| African | Naval | Air |
| Politics | Asian and Pacific | Gallipoli |
| Dates | Events | |
|---|---|---|
| July 14 – September 15 | Battles for Longueval and Delville Wood (Initial phase of the Battle of the Somme) | Details |
| September 3–6 | Battle of Guillemont (intermediate phase of the Battle of the Somme) | Details |
| September 5–7 | Battle of Dobrich, a phase of the conquest of Romania. | |
| September 6 | The Central Powers create a unified command. | |
| September 7–11 | Battle of Kisaki. | |
| September 9 | Battle of Ginchy (intermediate phase of the Battle of the Somme) | Details |
| September 12 – December 11 | Monastir Offensive, set up of the Salonika Front. | |
| September 12–14 | Battle of Malka Nidzhe, a phase of the Monastir Offensive. | |
| September 12–30 | Battle of Kaymakchalan, a phase of the Monastir Offensive. | |
| September 14–17 | Seventh Battle of the Isonzo | |
| September 15–22 | Battle of Flers-Courcelette; the British use armored tanks for the first time in history. | Details |
| September 17–19 | First Battle of Cobadin, a phase of the conquest of Romania. | |
| September 20 | The Brusilov Offensive ends with a substantial Russian success. | Details |
| September 25–28 | Battle of Morval (part of the final stages of the Battle of the Somme) | Details |
| September 26–28 | Battle of Thiepval Ridge (part of the final stages of the Battle of the Somme) | Details |
| September 29 – October 5 | Flamanda Offensive, a phase of the conquest of Romania. |
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|
This Month in World War I |
| Theatres | ||
|---|---|---|
| Western | Eastern | Italian |
| Caucasian | Middle Eastern | Balkan |
| African | Naval | Air |
| Politics | Asian and Pacific | Gallipoli |
| Dates | Events | |
|---|---|---|
| July 14 – September 15 | Battles for Longueval and Delville Wood (Initial phase of the Battle of the Somme) | Details |
| September 3–6 | Battle of Guillemont (intermediate phase of the Battle of the Somme) | Details |
| September 5–7 | Battle of Dobrich, a phase of the conquest of Romania. | |
| September 6 | The Central Powers create a unified command. | |
| September 7–11 | Battle of Kisaki. | |
| September 9 | Battle of Ginchy (intermediate phase of the Battle of the Somme) | Details |
| September 12 – December 11 | Monastir Offensive, set up of the Salonika Front. | |
| September 12–14 | Battle of Malka Nidzhe, a phase of the Monastir Offensive. | |
| September 12–30 | Battle of Kaymakchalan, a phase of the Monastir Offensive. | |
| September 14–17 | Seventh Battle of the Isonzo | |
| September 15–22 | Battle of Flers-Courcelette; the British use armored tanks for the first time in history. | Details |
| September 17–19 | First Battle of Cobadin, a phase of the conquest of Romania. | |
| September 20 | The Brusilov Offensive ends with a substantial Russian success. | Details |
| September 25–28 | Battle of Morval (part of the final stages of the Battle of the Somme) | Details |
| September 26–28 | Battle of Thiepval Ridge (part of the final stages of the Battle of the Somme) | Details |
| September 29 – October 5 | Flamanda Offensive, a phase of the conquest of Romania. |
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