Irregular Warfare Definitions
Joint Definition:
Irregular warfare (IW) is defined as form of warfare where states and nonstate actors campaign to assure or coerce states or other groups through indirect, non-attributable, or asymmetric activities.
– Joint Pubilcation-1, Vol 1 Joint Warfighter
Army Definition:
The overt, clandestine, and covert employment of military and non-military capabilities across multiple domains by state and non-state actors through methods other than military domination of an adversary, either as the primary approach or in concert with conventional warfare.
— Field Manual 3-0 Operations