For a generation between 1330 and 1370 England was exceptionally unified and with a ‘single spirit’ achieved some of the greatest military victories of the middle ages. The image of Edward III and his time is inextricably linked to war. Crécy, Calais, and Poitiers, the Black Prince, Henry of Lancaster, and John Chandos, and Edward himself bring to mind valour and chivalry and have occupied centre stage in most histories of the period.

Yet the domestic backdrop is equally compelling. Edward's military accomplishments are especially impressive because they occurred at a time of remarkable change. The first half of the century saw pitiful harvests, famine, and severe deflation in quick succession. Then the Black Death struck, not just in 1348, but again in 1360, 1373, and periodically thereafter. The resulting drop in population, loss of tenants, and rise in wages battered the economy that undergirded lordship and government. Crime and corruption sparked anxiety and protest. These dislocations made the difficult job of mobilizing manpower and wealth even more formidable than in ordinary times.