Battle of Tumusla | History 101 | Batalla de Tumusla

By Juan José Toro, Visión 360:

I cannot share more details about the investigation, as the results will be made public during the official event scheduled for this Thursday.

On Wednesday, in La Paz, the governor of Potosí, Marco Antonio Copa, officially presented the findings of an investigation that has uncovered a file of previously unknown documents by General Carlos Medinaceli Lizarazu, the victor of the Battle of Tumusla.

La Paz was chosen as the location for the initial presentation because it has been the source of challenges to this episode in our history. There have been claims that this military action never occurred—a recent book labeled it as “the fable of Tumusla.” And when its occurrence is acknowledged, it is often not recognized as a “battle” but rather degraded to a “mutiny.”

The challenges intensified after July 2023, when researcher Valentín Abecia López published his two-volume work Tumusla: necropsia de un fraude, which alleges that 14 letters forming part of a supposed “Daily Record” by General Medinaceli are false. However, it is worth noting that Abecia does not deny the battle but questions Medinaceli’s actions between January 9 and March 29, 1825. He does, however, classify the Tumusla event as a mutiny.

What I did from Potosí was to complete an investigation that began in 2016, which resulted in over 200 documentary pieces of evidence showing that on April 1, 1825, there was a military action at Tumusla, and it was not a mutiny but a battle. The documents proving this—several of them—are part of this investigation, which will soon be made available to the public in the form of a book.

In the final stages, I came across a document that had never been mentioned before: a file of letters seemingly written or dictated by Carlos Medinaceli Lizarazu between January 6 and October 3, 1825. As expected, among these writings are explicit references to the Battle of Tumusla.

Since my perspective on the subject was insufficient, I sought the expertise of two specialists: Carlos Rúa, an expert in the restoration of antique artifacts, and María del Carmen Thompson, a paleographer who worked at the Bolivian National Archives and Library. Their independent analyses confirmed that the file contains letters written between the late 18th and early 19th centuries, thus dating to 1825. It was also confirmed that the handwriting and ink are from the period.

The authenticity of the document has been validated and complements all the other evidence demonstrating that the Battle of Tumusla was, indeed, the historical event that liberated Upper Peru from Spanish domination. This will be presented, with documentary arguments, in a book that should be printed by mid-March.

I conclude with this note: based on these findings, the veracity of the Battle of Tumusla can no longer be denied.

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