The different natures of the Nine Grounds; the suiting of the means to the occasion; the hearts of men: these are things that must be studied.
When deep in the interior of a hostile country, there is cohesion; if only on the borders, there is distraction. To leave home and cross the borders is to be free from interference.
On distracting ground, unite the soldiers’ minds,
On disturbing ground, keep together.
On disputed ground, try to take the enemy in rear.
On intersecting ground, look well to the defences.
On path-ridden ground, cultivate intercourse.
On deeply-involved ground be careful of supplies.
On difficult ground, do not linger.
On enclosed ground, close the path of escape.
On death ground, show the soldiers that there is no chance of survival.
