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El Tacnazo | |||||||||
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Part of the Cold War | |||||||||
![]() Regimiento Tacna building in Santiago de Chile. | |||||||||
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Government-Insurgents | |||||||||
Eduardo Frei Montalva | Roberto Viaux | ||||||||
Political support | |||||||||
All parties in Congress of Chile | |||||||||
Military support | |||||||||
Almost all Chilean Armed Forces | Tacna Regiment |
Tacnazo insurrection (October 21, 1969) (Spanish: El Tacnazo) was a brief revolt of the Tacna artillery regiment, led by General Roberto Viaux, in what turned out to be a non-violent demonstration against the government of Chilean President Eduardo Frei Montalva.