The Battle of Ibicuí River took place between the Luso-Brazilian forces under Brigadier Chagas dos Santos and the Federal League forces under the command of General Sotelo. The Luso-Brazilians were victorious and inflicted very high casualties on Sotelo's army.
General José de Abreu had secured the left bank of the Uruguay River as far south as its junction with the Ibicuí River where Santos had command of 650-700 men. Federal League forces under General Sotelo travelled from Yapeyú upstream and landed near the junction of the two rivers on 20 September. Luso-Brazilian forces attacked these troops on 21 and 23 September. After their artillery drove off the protecting squadron of boats Sotelo withdrew.
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