The uprising began in March, and established itself with the capture of the provincial capital, Salona (modern
Amfissa), on 27 March 1821. The Ottoman garrison held out in the citadel until April 10, when the Greeks took it. At the same time, the Greeks suffered a defeat at the
Battle of Alamana against the army of
Omer Vryonis, which resulted in the death of
Athanasios Diakos. But the Ottoman advance was stopped at the
inn of Gravia, under the leadership of
Odysseas Androutsos, who was subsequently named commander-in-chief of Eastern Greece. Vryonis turned towards
Boeotia and sacked
Livadia, awaiting reinforcements before proceeding towards the
Morea. These forces, 8,000 men under Beyran Pasha, were however met and defeated at the
Battle of Vassilika, on August 26. This defeat forced Vryonis too to withdraw, securing both Eastern Greece and the Morea. == The Administration of Eastern Greece ==