But if you don't build a training ground, how do you turn peasants into crossbowmen?
Of course, this can't be done without building a training ground. The word "otherwise" also indicated this.
Bow down and hear our cry,
Our earthly rulers falter,
Our people drift and die,
The walls of gold entomb us,
The swords of scorn divide,
Take not thy thunder from us,
Take away our pride.
G.K. Chesterton: English Hymnal