Greek War of Independence (feb 21, 1821 – sep 12, 1829)
Description:
The Greek War of Independence, also known as the Greek Revolution, was a successful war of independence waged by Greek revolutionaries against the Ottoman Empire between 1821 and 1830.
The Greeks were later assisted by the Russian Empire, Great Britain, the Kingdom of France, while the Ottomans were aided by their North African vassals, the eyalets of Egypt, Algeria, and Tripolitania, and the Beylik of Tunis.
https://en.wikipedia.org/wiki/Greek_War_of_Independence
Added to timeline:
Date:
feb 21, 1821
sep 12, 1829
~ 8 years and 6 months