In 1547, Holy Roman Emperor Charles V penned a letter to his ambassador, Jean de Saint-Mauris, part of which was written in the ruler's secret code. Nearly five centuries later, researchers have ...

The researchers now hope to identify other letters between the emperor and his ambassador “to have a snapshot of Charles V’s strategy in Europe”, she said. “It is likely that we will make ...

Researchers in France have finally cracked a complex code of mysterious symbols and "nonsense" decoys written by Charles V, the former Holy Roman Emperor and King of Spain. When you purchase ...