Authors:

A nation fights well in proportion to the amount of men and materials it has. And the other equation is that the individual soldier in that army is a more effective soldier the poorer his standard of living has been in the past.

Norman Mailer (2013). “The Naked and the Dead: 50th Anniversary Edition, With a New Introduction by the Author”, p.174, Henry Holt and Company
A nation fights well in proportion to the amount of men and materials it has. And the other equation is that the individual soldier in that army is a more effective soldier the poorer his standard of living has been in