The Wealth of Nations by Part 5 Chapter 1 Page 31

time in the open air, they were always less accustomed to military exercises, and were less expert in the use of their arms than the Tartars and Arabs are said to be.

A militia of any kind, it must be observed, however, which has served for several successive campaigns in the field, becomes in every respect a standing army. The soldiers are every day exercised in the use of their arms, and, being constantly under the command of their officers, are habituated to the same prompt obedience which takes place in standing armies.

What they were before they took the field is of little importance. They necessarily become in every respect a standing army after they have passed a few campaigns in it. Should the war in America drag out through another campaign, the American militia may become in