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To Chung-wei was for waiting until this had abated before

deciding on a final attack; but luckily another officer, Li

Shou-cheng by name, was quicker to see an opportunity, and said:

"They are many and we are few, but in the midst of this sandstorm

our numbers will not be discernible; victory will go to the

strenuous fighter, and the wind will be our best ally."

Accordingly, Fu Yen-ch'ing made a sudden and wholly unexpected

onslaught with his cavalry, routed the barbarians and succeeded

in breaking through to safety.]

37. Such is the art of warfare.

[1] See Col. Henderson, op. cit. vol. I. p. 426.

[2] For a number of maxims on this head, see "Marshal Turenne"

(Longmans, 1907), p. 29.

Chapter VIII. VARIATION OF TACTICS