We believed to know what killed Napoleon’s army in Russia. The finding of a tooth has shown us something else

In 1812 there is a moment that was going to be registered in the history books. The Russia invasion by Napoleon culminated in one of the greatest military tragedies: The great arméeformed by more than half a million men, was forced to a devastating withdrawal marked by hunger, cold and disease, a combination that cost the lives of hundreds of thousands of soldiers.

Or we believed.

Health catastrophe. In the summer of 1812, Napoleon Bonaparte gathered up to 600,000 soldiers for his campaign against Russiathe greatest force he had ever deployed. However, the burned land strategy of Tsar Alejandro iwhich involved Evacuar Moscow and deprive the supplier of supplies, forced the withdrawal of the French army to Poland during a brutal winter.

Between October and December of that year, more than 300,000 men perishedvictims of hunger, the extreme cold and a wave of diseases that devastated to an already weakened force. For a long time, the testimonies of survivors and the first scientific analyzes pointed to the TIFUS and the trench fever as the main culprits, reinforcing the idea that the bad hygienic conditions had sealed the fate of the great Armée.

The new findings. Now, research carried out In the Pasteur Institute in Paris they have contributed a more precise vision thanks to metagenomic techniques, capable of identifying genetic material of any pathogen present in human remains. Nicolás Rascovan’s team analyzed Thirteen soldiers Buried in Vilna (current Lithuania), epicenter of mortality during the withdrawal.

The results did not detect traces of typhus or trenches fever, but they did reveal the presence of Salmonella Entericacause of paratyphoid fever, and Borrelia recurrentis, transmitted by lice and responsible for recurring fever. These diseases, although not always fatal, would have deeply weakened soldiers already exhausted by endless marches, lack of food and glacial temperatures. In that context, even pathologies that in other circumstances could have overcome became mortal.

Napoleonic invasion in Russia

Lethal combination He New scenario It suggests that defeat is not explained by a single infectious agent, but by a devastating combination: physical exhaustion, starvation, extreme cold and a set of diseases that, together, undermined the resistance of tens of thousands of men. The Parathyphoid fever It would have caused diarrhea and dehydration, while recurring fever progressively weakened with cyclical episodes of high fever.

All this, added to the lack of hygiene, to the spread of lice and the impossibility of adequate medical care in the middle of the chaos of the withdrawal, turned the Napoleon army into a paid field For the disease. The magnitude of the health catastrophe even exceeded combat losses, and became one of the decisive factors that precipitated the collapse of the campaign.

Historical and scientific implications. Although some experts warn that the amount of recovered DNA is reduced and that the results are not entirely conclusive, The study It marks an important advance in the use of modern tools to reinterpret historical episodes.

Demonstrates the Metagenomics potential To trace diseases in ancient human remains and offers new perspectives on how biology, and not only military strategy, it can explain the collapse of whole armies and populations. Researchers They point That these techniques could also be applied to the study of communities in America and Australia after European contact, where the lack of reliable records and historical biases make it difficult to understand the true impact of epidemics.

The defeat that sealed the empire. The Tragedy of 1812 It is still one of the most studied inflection points in military history. The collapse of the Great Armée Not only stopped the Napoleonic expansion, but triggered the offensive of his enemies and the beginning of the end of his empire. While the epic of the campaign has traditionally been narrated in the key of battles and strategic decisions, the New evidence They confirm that biology and disease played a central role in the debacle.

The withdrawal of Russia was, ultimately, both a military disaster and an epidemiological catastrophe, and the DNA of a few teeth found in Vilna has allowed to illuminate more precisely the executioners invisible and tiny that decimated the soldiers of Napoleon in one of the most lethal winters in history, starting with an unexpected “army” of lice.

Image | Jean-Louis-Ernest Meissonier, Blaue Max

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