《商君书·战法》
用兵的错误，要害是轻敌冒进，使军队背靠险地，渡过边塞，使众人疲倦而饥渴交加，再加上遇到疾病流行，这是错误的用兵方法。
其过失，无敌深入，偕险绝塞，民倦且饥渴，而复遇疾，此其道也。
The mistake of using troops is to underestimate the enemy and advance rashly, causing the army to back against dangerous places, cross the border, and make everyone tired and hungry. Coupled with the prevalence of diseases, this is a wrong way to use troops.