The Yamasee War ended the Indian slave trade in the South in 1717. Simular to the American Civil War, this war was not specifically caused by the need to end or protect slavery, but the institution of slavery was destroyed because of the effects of the war. "The Indian Slave Trade: The Rise of the English Empire in the American South" ... By Alan Gallay

The Haitian Revolution (1791–1804), was unique in that the slaves ended slavery by defeating the French Army.

The Roman Servile Wars (three)

The Fifth Ottoman-Venetian War, fought to defeat the Ottomans and free Christian slaves.

The Barbary Wars, in which ended when the U.S. Navy defeated Barbary Pirates, ending the threat of slavery to millions of Europeans.

The New Zealand Wars, ended native slavery in in New Zealand in the 1860s.

There are more.

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David Upton