Battle of Yerbal

Part of the Cisplatine War

Date	25 May 1827
Location	Near Pedras Altas, Rio Grande do Sul, southern Brazil
Result	Both sides claim victory

Belligerents

Empire of Brazil

United Provinces

Commanders and leaders

Bonifácio Isás Calderón

Juan Lavalle (WIA)

Strength

400

891

Casualties and losses

Unknown

2 wounded

v t e Cisplatine War
Land campaign Puntas del Águila Rincón Sarandí Vacacai Umbu Ituzaingó Camacuã Yerbal Padre Filiberto Las Cañas Ibicuí River Naval campaign Buenos Aires Punta Colares Colonia del Sacramento Nictheroy Imperatriz Banco de Ortiz Los Pozos 1st Quilmes Martín García Juncal Punta de Quilmes Carmen de Patagones Monte Santiago 1st Ensenada San Blas 2nd Ensenada 2nd Quilmes 1st Punta Lara Costa de Castillos Bajíos de Arregui 2nd Punta Lara

Cisplatine War

Land campaign

Naval campaign

The Battle of Yerbal, also known as the Battle of Erval or Battle of Pedras Altas, was fought on 25 May 1827 between a militia force of the Imperial Brazilian Army and an Argentine cavalry detachment in the context of the Cisplatine War.

Battle

Lieutenant-colonel Bonifácio Isás Calderón, leading 400 militiamen, confronted an 891 men strong Argentine cavalry detachment in the vicinity of Pedras Altas. The Argentine commander, Juan Lavalle, decided to flee and was pursued until the night. Lavalle and captain Maciel, his second in command, were wounded while charging against the Brazilians.

References

^ Donato 1987, p. 388.
^ Garcia 2012, p. 320.
Garcia 2012, p. 319-320.
Moreno 2004, p. 423.

Bibliography

Donato, Hernâni (1987). Dicionário das Batalhas Brasileiras (in Portuguese). São Paulo: Editora Ibrasa.
Garcia, Rodolfo (2012). Obras do Barão do Rio Branco VI: efemérides brasileiras (PDF) (in Portuguese). Brasília: Fundação Alexandre de Gusmão. ISBN 978-85-7631-357-1.
Moreno, Isidoro (2004). Campañas militares argentinas (in Spanish). Vol. I. Buenos Aires: Ed. Emecé. ISBN 950-04-2675-7.

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