Carefully compare the opposing army with your own,
Tu Yu is right, I think, in attributing this force to 角; Ts‘ao
Kung defines it simply as 量. Capt. Calthrop surpasses himself with
the staggering translation “Flap the wings”! Can the Latin _cornu_
(in its figurative sense) have been at the back of his mind?
so that you may know where strength is superabundant and where it is
deficient.
Cf. IV. § 6.