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Longman Dictionary of Contemporary English
battle fatigue
noun
EXAMPLES FROM CORPUS
▪ A lifeless performance left manager Lennie Lawrence wondering whether his players are suffering battle fatigue after a hectic cup-and-league programme.
▪ If battle fatigue sets in, Mr Biedenkopf may have reason for optimism.
Wiktionary
battle fatigue

n. A psychiatric condition characterized by fatigue caused by battle.

WordNet
battle fatigue

n. a mental disorder caused by stress of active warfare [syn: combat fatigue, combat neurosis, shell shock]

Wikipedia
Battle fatigue

Battle fatigue is an obsolete term which may refer to:

  • Combat stress reaction, a military term for an acute reaction to the stress of battle commonly involving fatigue, slowed reaction time, indecision, and other symptoms
  • Posttraumatic stress disorder, a medical term for a chronic disorder associated with psychological trauma
  • Shell shock, a term used in WW I for an uncontrolled strong nervous reaction to the battle's horrible and extreme unhuman conditions

Usage examples of "battle fatigue".

As if he wasn't already a classic case of battle fatigue when he arrived at Orion Lake, he had to go and get himself shot again.

Teres cursed her momentary lapse--battle fatigue was dulling her thoughts--and lopped off the extended sword arm.

Christ, with all they had been through, a man could be excused a little battle fatigue.

But her job was complete and now she would need rest and rehabilitation from the inescapable battle fatigue .