Correct your mistake as soon as you have found it.
Rapidity is the essence of war.
The rising of birds in their flight is the sign of an ambuscade. Startled beasts indicate that a sudden attack is coming.
Act after having made assessments. The one who first knows the measure of far and near wins - this is the rule of armed struggle.
Every battle is won before it is fought.
Fierce language and pretentious advances are signs that the enemy is about to retreat.