1866 in Argentina
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Incumbents
Governors
- Buenos Aires Province: Mariano Saavedra (until 1 May), Adolfo Alsina (starting 1 May)
- Mendoza Province:
- until 1 November: Carlos González
- 1 November-11 November: Melitón Arroyo
- starting 11 November: Carlos Juan RodrÃguez
- Santa Fe Province: Nicasio Oroño
Vice Governors
- Buenos Aires Province: vacant
Events
- January 31 â Paraguayan War: The Battle of Pehuajó takes place when about 1500 Paraguayan troops, commanded by General Francisco Isidoro ResquÃn and Lieutenant Celestino Prieto, engage in a surprise attack Argentinian and Uruguayan battalions with around 2000 men, led by General Emilio Conesa; the Paraguayans are successful and the joint Argentine-Uruguayan force suffers heavy casualties.[1]
- May 24 â Paraguayan War: First Battle of Tuyutà is an allied victory.[2]
- July 18 â Battle of Boquerón (1866)
- September 1â3 â Battle of Curuzú
- September 22 â Battle of Curupayty
Deaths
- February 15 â Juan Gregorio de las Heras, military leader (born 1780)
