The Russian fleet under the command of Admiral Orlov, returning from St. Petersburg, arrived in front of Lesbos on November 11, 1771, and dropped anchor. They then demanded the surrender of the main castle and the island from the Turkish garrison, but this demand was rejected by the local Ottoman commander, Osman Pasha. Thereupon, after subjecting the castle to cannon fire for three days, the Russian fleet landed troops on the island on November 13 and began a major plundering campaign.[2]
Kapudan Pasha Cezayirli Gazi Hasan Pasha, on the other hand, had received advance notice that the island was being targeted and requested military reinforcements. Hasan Pasha, who received the necessary reinforcements, raided the island on November 16, 1771. While the Russian forces, who did not expect this attack, quickly retreated to their ships, the Russian fleet retreated in disorder, leaving 25 soldiers as prisoners in a hairpin called "Santorino". Hasan Pasha, who had the hairpin burned, sent 25 captured Russian soldiers to Istanbul.[3]