How many soldiers could a medieval society support? What about militias and conscripts?

by Bithurler

I am interested in the logistics of pre-industrial armies, especially the 13th and 14th century in europe.

How many farmes would be roughly needed to support a knight?

I have heard the following numbers (without source), are they remotely accurate and verifiable?

  • ~90 farmers support about
  • 10 artisans and/or people living in cities and
  • one full time soldier

The answer is of course dependant on farming and weapon technology, but how much do those numbers vary over the iron age?

I always thought (larger) militias and/or conscript armies were not used because of cultural reason (it is the noble's / lord's duty to protect the peassants) and organisational problems, but was recently told that arming farmers would do no good anyway. I would be very happy if someone could enlighten me about the topic.

staples11

While this doesn't directly answer your question, I think this post about Uzege region, in Gard in medieval France puts together a really interesting picture of the medieval economy and demographics.

https://www.reddit.com/r/AskHistorians/comments/3uzs4d/in_the_middle_ages_how_did_the_internal_economy/