Indirect tactics, efficiently applied, are inexhaustible as ... ss. 5.6, Chapter 5: Energy

When an invading force crosses a river in its onward march, ... ss. 9.4, Chapter 9: The Army on the March

Do not move up-stream to meet the enemy. ss. 9.6, Chapter 9: The Army on the March

On serious ground, I would try to ensure a continuous stream... ss. 11.49, Chapter 11: The Nine Situations