investigation and intelligence unit (law enforcement)

enforcement of maritime law

enforcement of martial law

law enforcement agencies

law-enforcement agency

international humanitarian law (See international law of armed conflict)

violation of law (breach of the law)

investigation unit

Accident Investigation and Prevention Section

drug enforcement (DE)

drug enforcement agencies

enforcement

enforcement action(s)

enforcement mandate

peace enforcement (PE)

peace enforcement operations (PEO)

sanctions enforcement

truce enforcement/supervision

tariff enforcement

The Higher United Nations Defense Enforcement Reserves (THUNDER)

law and order

ensurance of law and order

guarantor of law and order

Federal Bureau of Investigation (FBI)

International Independent Investigation Commission - Lebanon (UNIIIC)

US Army Criminal Investigation Command

systematic investigation

targeted investigation

accident investigation

accident investigation authority

accident investigation division

crash investigation procedure

safety investigation