On the night of 21 July 1403, a 16-year-old soldier was carried into the candlelit sanctuary of Shrewsbury Abbey with a bloodied rag pressed against his face. Shortly before, he’d been evacuated from a nearby battlefield when an arrow had hit him just a little below his right eye.
Ordinarily, the young man would have been left to die. After all, this was medieval Britain, hundreds of years before the advent of anaesthetics, military surgeons or combat medics. The wounded teenager, however, was no ordinary soldier. He was Prince Hal, eldest son of King Henry IV and heir to the throne of England.
The origins of the Battle of Shrewsbury, in which Hal had just fought, could be traced back to the reign of the previous monarch, Richard II. His…