Some, however, have recently added a single intermediate category of “hybrid warfare”: […] . The notion of “hybrid” war makes a valuable contribution in breaking down unhelpful dichotomies between “conventional” and “guerrilla,” and is a clear and important step in the right direction.

the changing character of conflict from conventional to irregular and hybrid warfare.

Entities using IW [irregular warfare] flout Geneva Convention rules and use nontraditional tools, including weapons of mass destruction, improvised explosive devices, and cyberwar operations. Hybrid warfare is waged using a combination of regular and irregular warfare tools, concepts, and doctrines.

Hybrid warfare

Meaning

Noun