Simple Definition of battle fatigue

from our Learner's Dictionary

battle fatigue

noun

: a mental illness that is caused by the experiences of fighting in a war and that causes extreme feelings of nervousness, depression, etc.

called also shell shock

Cite this Entry

“Battle fatigue.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/battle%20fatigue. Accessed 22 Apr. 2026.

More from Merriam-Webster on battle fatigue

More from Merriam-Webster