"Of the 50 skeletons excavated so far, most of the individuals are young men between about 16 and 30 years old, and Binder said their bones bear traces of scurvy from vitamin C deficiency, inflammation of the joints from long marches carrying heavy loads, and infections like pneumonia and other diseases that would have spread in the cramped conditions of the military camp."

https://www.livescience.com/62774-mass-grave-napoleonic-wars.html