artillery; whose retreat is like the removal of a mountain, advance like the hurricane, and whose supplies are in abundance, is an enemy against whom long defence is difficult. In effect, what should be done in such a case?”
And Wu answered and said:—
“This indeed is a great question, whose issue depends, not upon the might of chariot and horse, but upon the schemes of a wise man.
“Let 1,000 chariots and 10,000 horse, well equipped and with foot-men added to them, be divided into five armies, and a road allotted to each army.
“Then if there be five armies, and each army take a different road, the enemy will be puzzled, and know not in what quarter to be prepared. If the enemy’s defence be strong and united, send envoys quickly to him to discover his intention. If he listen to our advices, he will strike camp and withdraw. But, if he listen not to our advice, but strikes down the messenger, and burns his papers, then divide and attack
