Even though the arrogance of medieval knights sometimes worked
against them, more often than not they proved an asset in battle during
most of the High Middle Ages. Nevertheless, by the inal years of that
era, historian Robert Jones points out, their military efectiveness and
at times dominance over infantry “had vanished from the battleield.”21
One reason for this dramatic development was that cavalry armor and
weapons became more and more expensive. Eventually, as national governments
increasingly switched from militia to standing armies, the costs
of maintaining large units of knights became unafordable.
Another reason for the demise of medieval cavalry was that infantry became
increasingly strong in the period’s last century and a half. Still another
factor was the development of irearms in those same years. Cannonballs
and bullets ired by hand-held guns rendered even the heaviest armor useless
to those horsemen who were unfortunate enough to be hit by them.
Military strategists saw that the wisest approach was to eliminate most of a
cavalryman’s armor, along with the lance, and give him a gun. In this way,
medieval cavalry transitioned into early modern cavalry, and thereafter traditional
European knights existed only in history books, novels, and movies.