the morality rule
you have to fight on the side that is in the right…
the weather rule
A war in the rain is different from a war in the sun; a battle in the winter is different from a battle in the summer…
the space rule
A war in a ravine is different from a war in the field…
the choice rule
The warrior knows how to choose who should give advice, and who will remain at his side in combat. a chieftain cannot be surrounded by cowards or traitors…
the strategy rule
The way in which the battle is planned…