What to read after The Art of War ( Also Sayings of Wu Tzu)?

Also included in this edition of the art of war is the sayings of Wu Tzu, who "albeit clothed in the raiment of a scholar, was a man skilled in the art of war".Sun the Master said: -The ancient masters of war first made their armies invincible, then waited until the adversary could with certainty be defeated.The causes of defeat come from within; victory is born in the enemy's camp.Skilful soldiers make defeat impossible, and further render the enemy incapable of victory.But, as it is written, the conditions necessary for victory may be present, but they cannot always be obtained.If victory be unattainable, we stand on the defensive; if victory be sure, we attack.And Wu the Master said: -The mighty rulers of old first trained their retainers, and then extended their regard to their outlying feudatories.There are four discords: -Discord in the state: then never make war.Discord in the army: then do not strike camp.Discord in the camp: then do not advance to attack.Discord in the battle array: then seek not to decide the issue.Therefore, wise rulers who would employ their subjects in great endeavours, should first establish harmony among them.