During August 1821, an Ottoman force of 5,000-8,000 men under the command of Behram Pasha campaigned south to quell the Greek revolution and lift the siege of Tripolitsa.

To intercept this expedition, the revolutionaries under the command of Yannis Gouras and Ioannis Dyovouniotis assembled in the desolate village of Vasilika of Phthiotis, where the road led to a long and narrow path.

[4] On 7 September 1821,[1] the Turkish forces attempted to continue their march through Vasilika, but they engaged with the revolutionaries and fierce battle ensued.

The Greeks, after using their firearms, they assaulted the Ottomans since they had heard a rumor that Odysseas Androutsos, a prominent military captain of Eastern Central Greece, was approaching the battlefield to reinforce them.

The Ottomans suffered heavy casualties, and eventually they retreated to Lamia, leaving many of their war supplies and seven cannons behind.