Rules of Engagement

Rules of engagement (ROE) are rules or directives to military forces (including individuals) that define the circumstances, conditions, degree, and manner in which the use of force, or actions which might be construed as provocative, may be applied. They provide authorization for and/or limits on, among other things, the use of force and the employment of certain specific capabilities. In some nations, ROE have the status of guidance to military forces, while in other nations, ROE are lawful commands. Rules of engagement do not normally dictate how a result is to be achieved, but will indicate what measures may be unacceptable.

While ROE are used in both domestic and international operations by most militaries, ROE are not used for domestic operations in the United States. Instead, the use of force by the U.S. military in such situations is governed by Rules for the Use of Force (RUF).

An abbreviated description of the rules of engagement may be issued to all personnel. Commonly referred to as an "ROE card", this document provides the soldier with a summary of the ROE regulating the use of force for a particular mission.

While many countries have their own rules of engagement documents, many others do not. There are two primary international rules of engagement manuals that are internationally available: NATO ROE Manual MC 362-1 (restricted to NATO and Partnership for Peace countries); and the San Remo Rules of Engagement Handbook, which is freely available to all on the International Institute of Humanitarian Law (IIHL) website. Created for the IIHL by Commander Alan Cole, Major Phillip Drew, Captain Rob McLaughlin and Professor Dennis Mandsager, the San Remo ROE Handbook has been translated from its English original into French, Chinese, Arabic, Spanish, Hungarian, Russian, Bosnian, and Thai and several other languages. Several countries have used the San Remo handbook as a model for creating their own ROE systems.

...
Wikipedia