noun
military disturbance; military upheaval
Refers to a disturbance or upheaval caused by military forces, such as a coup, mutiny, or armed rebellion. Relatively formal and somewhat literary.
その国では兵変が起こり、政府が倒れた。
A military disturbance broke out in that country, and the government fell.
歴史書には度々兵変の記述が見られる。
Descriptions of military upheavals are often found in history books.