In July 1804 he joined the Himariote and Souliote regiment of the Imperial Russian army, in order to support a possible revolt against the Ottomans.
After the Souliotes defeated the forces of Khourshid Pasha in May and June 1822, they joined Prince Alexander Mavrocordatos who landed at Missolonghi with a contingent of Greek regulars.
However, Ypsilantis, resolved to begin the revolution in March 1821, sent Perraivos to Epirus to coordinate with the Souliotes and other captains whom he knew from Corfu.
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Its first volume was published in 1803 in Paris and includes the earliest historical essay on Souli based on first-hand informations gathered from Souliotes refugees fighters in the island.
Meanwhile a number of Greek officers, most of them of Souliote descent (Nikolaos Zervas, Notis Botsaris, Athanasios Koutsonikas, Kitsos Tzavelas, Lambros Zikos), resigned from their posts in the Greek Army and joined the rebellion.
Tzavelas was born in Souli, Epirus in 1800, the son of Fotos Tzavelas and grandson of Lambros Tzavelas, both of whom were famous for their roles in the Souliot struggles against Ali Pasha, the Pasha of Yanina.
Kosta Botsaris was born in 1792 as the son of captain Kitsos Botsaris into one of the leading clans of the Souliotes, in Epirus.
Krystallis, as well as Christos Christovasilis, composed short patriotic stories inspired by the bravery of the fighters of the Greek War of Independence (1821–1830) and especially the Souliotes.
Julius Millingen describes him as a "Philhellene" and "friend of the Souliote Kostas Botsaris".
Botsaris was born into one of the leading clans of the Souliotes, in Epirus.
Moscho Tzavela was a Souliote, the wife of Lambros Tzavelas, with whom she had a son, Fotos.
On 17 November, Ottoman food supplies were seized by 250 Souliotes under command of Kitsos Tzavelas.
In early modern times, it was inhabited by about 12,000 Souliotes.
The village was first mentioned by the historian George Finlay as the Kantza narrows: when the Souliotes were sent as aid to Peta they were attacked by the Turks there in August 1822 during the Greek War of Independence.
The majority instead, established in the Kakosouli village, which was one of the main four villages in the Souliote Confederation.