老弱残兵 [
lǎo ruò cán bīng]
remnants of a rabble army
motley troops unfit for combat duty -- incompetent persons for a given job
old, weak and wounded troops
remaining troops made up of old and weak soldiers
- 如今魏赵两国相互攻打,魏国的精锐部队必定在国外精疲力竭,老弱残兵在国内疲惫不堪。
Today Liang Zhao-phase attack, Light soldiers Ruicu must exhaust the outside, the old and weak strike on the inside.