To muster his host and bring it into danger:—this may be termed the
business of the general.
Sun Tzŭ means that after mobilisation there should be no delay in
aiming a blow at the enemy’s heart. With 投之於險 cf. _supra_,
§ 23: 投之無所往. Note how he returns again and again to this point.
Among the warring states of ancient China, desertion was no doubt
a much more present fear and serious evil than it is in the armies
of to-day.