These are the years when the Black Death struck in the great plague of 1348-50, killing more than a third of the entire population between India and Iceland, and returned four times during the rest of the century... when freebooting companies of brigands terrorized Europe with impunity... when a "hundred years' war" seemed to have no beginning and no end, and, defying the belligerents' own efforts to end it, acquired a life of its own, "an epic of brutality and bravery checkered by disgrace"... when chivalry, the ideal that had formed and nurtured the nobility, was crumbling under the impact of new weapons, new tactics, and knightly follies...
An excellent commentary on Barbara Tuchman as an historian.
https://www.commentarymagazine.com/articles/a-distant-mirror-by-barbara-w-tuchman/