battle fatigue noun
Learner's definition of BATTLE FATIGUE
[noncount]
: a mental illness that is caused by the experiences of fighting in a war and that causes extreme feelings of nervousness, depression, etc.战斗疲劳(由战争经历引起的神经机能病症状,如焦虑、抑郁等) — called also combat fatigue, shell shock
— compare post-traumatic stress disorder