Paraguayan War
1864–1870
Paraguay against the Triple Alliance of Brazil, Argentina and Uruguay, the bloodiest war in South American history. It was fought up the Paraná and Paraguay rivers. Brazil's navy won control of the rivers at Riachuelo in 1865, and in 1868 its ironclads ran past the great river fortress of Humaitá.
How the fleets moved
Click a route to see which ships made it, or a battle for its summary. Routes are approximate.
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Brazilian movement
Paraguayan movement
Battle (size: ships engaged)
Routes are approximate.
Battles
In date order.
Fleets
Each navy's ships in the war, from its biggest down.