Counterinsurgency (COIN)

Definition

Military operations designed to defeat an irregular enemy that's embedded in civilian populations—essentially playing whack-a-mole with guns and rules of engagement.

Example Usage

The general specialized in COIN operations from his previous deployment.

Origin

Modern military terminology, formalized after experiences in Vietnam and Iraq

Fun Fact

COIN is considered one of the most difficult military challenges because traditional tactics often fail

Source: U.S. military modern doctrine (FM 3-24)

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