Whenever you cross swords with an enemy you must not think of cutting him either strongly or weakly; just think of cutting and killing him. Be intent… - Miyamoto Musashi

The Ni To Ichi Way of strategy is recorded in this the Book of the Void.

"The Gaze in Strategy The gaze should be large and broad. This is the twofold gaze "Perception and Sight". Perception is strong and sight week. In strategy it is important to see distant things as if they were close and to take a distanced view of close things. It is important in strategy to know the enemy's sword and not to be distracted by insignificant movements of his sword. You must study this. The gaze is the same for single combat and for large-scale strategy. It is necessary in strategy to be able to look to both sides without moving the eyeballs. You cannot master this ability quickly. Learn what is written here; use this gaze in everyday life and do not vary it whatever happens."

The way to do battle is the same whether it is a battle between one individual and another or a battle between one army and another. You should observe reflectively, with overall awareness of the large picture as well as precise attention to small details.