What does "police action" mean?

Military action undertaken without a formal declaration of war.

Police action

Common synonyms include: armed intervention, busting, enforcement operation, holy war, law enforcement, law enforcement action.

noun

noun ·Rare ·Advanced level

Noun

1
Military action undertaken without a formal declaration of war. countable, uncountable
2
a local military action without declaration of war; against violators of international peace and order wordnet