Thatโs not really what the book says.
Yes, it literally is.
Chapter 9.29 and 30
When the soldiers stand leaning on their spears, they are faint from want of food
If those who are sent to draw water begin by drinking themselves, the army is suffering from thirst
logistics are really hard and must not be overlooked
Chapter 2.9
Bring war material with you from home, but forage on the enemy. Thus the army will have food enough for its needs
The entire Art of War can be printed on 4 pages of A4 paper if you remove all the fancy layout that usually goes into the book to pad it to something over 50.