We are not fit to lead an army on the march unless we are familiar with the face of the country⁠—its mountains and forests, its pitfalls 360 and precipices, 361 its marshes 362 and swamps. 363

We shall be unable to turn natural advantage to account unless we make use of local guides. 364

In war, practice dissimulation, and you will succeed. 365 Move only if there is a real advantage to be gained. 366

Whether to concentrate or to divide your troops, must be decided by circumstances.