New Study Pinpoints Hannibal's Alpine Crossing
A team from the University of Oxford, the German Centre for Integrative Biodiversity Research, and Friedrich Schiller University Jena has developed a model simulating the route Hannibal's army took through the Alps during the Second Punic War. Their findings identify the Col de la Traversette pass as the shortest and most energy-efficient path. Hannibal's force included 40,000 men, 7,000 horses, and 37 war elephants, making the mountainous crossing exceptionally challenging.
Hannibal hailed from Carthage, an ancient Phoenician city-state located in what is now Tunisia. The Alpine crossing occurred during the Second Punic War, with two primary historical accounts surviving—one written 20 years after the event and another 160 years later. According to the historian Livy, Hannibal completed the Alpine crossing in 16 days, while the entire military campaign lasted roughly two months. During this passage, Hannibal lost over 20,000 soldiers, yet his army remained a formidable force.
Energy Expenditure and Study Results
The research also compared energy costs across different routes. It found that traveling via the Col de Montgenèvre would have required 11 percent more energy than the Traversette route, while the Col de Clapier would have demanded 16 percent more energy. The most energy-intensive option was the Col du Mont Cenis, which would have needed 19 percent more energy. According to the models, men crossing the Traversette pass would have lost 19 percent of their fat reserves, whereas the elephants would have lost only four percent.
“The question of Hannibal’s exact route has been debated for generations. This new analysis does not resolve all ambiguity, but it strengthens the case for the Traversette route by showing it better meets the needs of moving a large army—including elephants—through extremely challenging alpine terrain.”
Dr. Emilio Berti, study co-author
Historically, Hannibal led his army from France into Italy across the Alps, hoping to gain a tactical advantage through surprise and using elephants to intimidate enemies and recruit Celts in northern Italy. Despite his strategic efforts, Carthage ultimately lost the war. In the Spanish region of Libisosa, ancient Roman weapons have been found, confirming military activity from that era. The first Roman civil war, known as the Sertorian War, took place between 82 and 72 BCE, highlighting the tense political climate of the region.
This study underscores the value of analyzing historical events with modern technology, offering deeper insight into the strategies and hardships faced by ancient armies. The findings may benefit not only historians but also those studying military logistics and energy expenditure in difficult conditions, potentially informing contemporary military planning.