[Ts’ao Kung explains the Chinese meaning of the words for the title of
this chapter: "marching and countermarching on the part of the two
armies with a view to discovering each other’s condition." Tu Mu says:
"It is through the dispositions of an army that its condition may be
discovered. Conceal your dispositions, and your condition will remain
secret, which leads to victory; show your dispositions, and your
condition will become patent, which leads to defeat." Wang Hsi remarks
that the good general can "secure success by modifying his tactics to
meet those of the enemy."]