The Battle of Sarantaporo, fought on October 9 and 10, 1912, marked the first major Greek victory on the Thessaly front during the First Balkan War, setting the stage for the Greek Army’s advance into Ottoman-held Macedonia.

The battle also carried deep historical significance for Greece, coming 15 years after the country’s defeat in the Greco-Turkish War of 1897.
Under the command of Crown Prince Constantine, the Greek Army of Thessaly advanced against Ottoman forces defending the strategically important Sarantaporo mountain passes. The Ottoman troops were commanded by Hasan Tahsin Pasha, whose forces sought to block the Greek advance northwards.
Despite the strength of the Ottoman defensive positions, the Greek Army broke through after fierce fighting, forcing the Ottoman forces to retreat. The victory opened the route towards Servia and Kozani and strengthened the Greek campaign to secure Macedonia during the opening weeks of the war.

The battle demonstrated the importance of coordination, determination and the ability to overcome heavily defended terrain. It also gave the Greek Army crucial momentum as the Balkan allies moved against the Ottoman Empire.
Hasan Tahsin Pasha and Esat Pasha commanded different fronts. Hasan Tahsin was associated with the Ottoman forces on the Salonica front, while Esat Pasha commanded Ottoman forces in Epirus, where the defence of Ioannina culminated in the Battle of Bizani in February 1913.

The distinction is important when recounting the campaigns of 1912 and 1913, as Sarantaporo and Bizani were separate battles fought on different fronts.
The victory at Sarantaporo remains a defining episode in the history of the First Balkan War and the Greek Army’s advance into Macedonia.