Hellenic Revolution against Ottoman Turks (link to wikipedia)
It was March 25, 1821, when Bishop Germanos of Patras raised the flag of revolution over the Monastery of Agia Lavra in the Peloponnese.
The cry “Freedom or death” became the motto of the revolution.
The Greeks experienced early successes on the battlefield,
including the capture of Athens in June 1822, but infighting ensued. By 1827
Athens and most of the Greek isles had been recaptured by the Turks.
Just as the revolution appeared to be on the verge of
failure, Great Britain, France, and Russia intervened in the conflict. The
Greek struggle had elicited strong sympathy in Europe, and many
leading intellectuals had promoted the Greek cause, including
the English poet Lord
Byron.
At the naval Battle
of Navarino, the combined British, French, and Russian forces destroyed an
Ottoman-Egyptian fleet.
The revolution ended in 1829 when the Treaty
of Edirne established an independent Greek state.