characterized by plundering or pillaging or marauding;
predatory warfare
Synonyms: marauding / raiding
predatory (adj.)
living by or given to victimizing others for personal gain; "a predatory, insensate society in which innocence and decency can prove fatal"- Peter S. Prescott; "a predacious kind of animal--the early geological gangster"- W.E.Swinton;