Historical eventSeptember 181918

World War I

World War I: The Central Powers' defeat at the Battle of Dobro Pole played a role in the Bulgarian withdrawal from the war and led to the subsequent liberation of Vardar Macedonia.

Everything on September 18Original source

In context

When
Wednesday, September 18 1918108 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
20th century · 1910s
Recorded from
Wikipedia “On this day” feed

At a glance

Dates: From 1918.

What came beforeAI-assisted

Bulgaria entered World War I in 1915 on the side of the Central Powers, seeking territorial gains in Macedonia and the Balkans. By 1918, the Central Powers faced mounting pressure on all fronts as Allied forces advanced across Europe.

Catalyst / how it startedAI-assisted

The French and Serbian armies launched an offensive in Macedonia on September 15, 1918, targeting Bulgarian positions in the Vardar region. The Battle of Dobro Pole began as part of this coordinated campaign to break through Bulgarian defenses.

Who was involvedAI-assisted

The French Army under General Franchet d'Espèrey and Serbian forces under Crown Prince Alexander commanded the offensive against Bulgarian troops. Bulgaria's military, weakened by years of war and domestic unrest, defended their positions in Macedonia.

TimelineAI-assisted

September 15–18, 1918: The Franco-Serbian offensive advanced rapidly through Bulgarian lines at Dobro Pole. September 29, 1918: Bulgaria signed an armistice, ending its participation in World War I just weeks after the Dobro Pole defeat.

What happened

World War I: The Central Powers' defeat at the Battle of Dobro Pole played a role in the Bulgarian withdrawal from the war and led to the subsequent liberation of Vardar Macedonia.

September 18 through the years

Other entries on the same calendar day, in order.

  1. 1918World War I
  2. 2007Saffron Revolution
  3. 2009CBS Studios
  4. 2010Philippe Croizon
  5. 20112011 Sikkim earthquake
  6. 2013Via Rail
  7. 20142014 Scottish independence referendum
  8. 20152015 Camp Badaber attack
  9. 20162016 Uri attack
  10. 2017Toys "R" Us
  11. 2018Cannabis

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  • July 17Russian RevolutionRussian Revolution: Tsar Nicholas II and his family (pictured) were murdered by Bolsheviks at Yekaterinburg.
  • March 30March DaysFour days of inter-ethnic clashes broke out in Baku, Azerbaijan, resulting in about 12,000 deaths.
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Everything we record for 1918 →

Sources

Cite this page

“World War I”, What's On This Date, https://whatsonthisdate.com/app/event/world-war-i-1918-september-18, accessed October 28, 2026.

Cite the underlying source as well — the source links above go to the record this entry is adapted from.

Questions about this entry

When did World War I happen?

September 18 1918 — 108 years ago, on a Wednesday.

Where does this text come from?

Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints. Panels marked AI-assisted were filled where the sources left a heading empty.

How do I cite this page?

Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.

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