How did medieval nations supply their soldiers during wartime?

by Golden_Spider666

From what I understand for much of history the creation of weapons and armor was considered an art, with one good weapon taking hours to complete, and needing a lengthy apprenticeship of many years to learn the craft. With these requirements how did nation supply their armies with weapons? What about in times of severe emergency when regular old people had to be drafted to serve did those people just have to make do with whatever resembled a weapon that they had access to?

WARitter

You may be interested in this previous answer by myself, which covers the later Middle Ages and the vastness, organization and sophistication of the armour industry.