Trinquier is a theorist on the style of warfare he called "Modern Warfare", an "interlocking system of actions – political, economic, psychological, military – which aims at the overthrow of the established authority in a country and its replacement by another regime." ("Modern Warfare", Ch. 2). He was critical of the traditional army's inability to adapt to this new kind of warfare. These tactics included the use of small and mobile commando teams, torture, the setting-up of self-defense forces recruited in the local population, and their forced relocation in camps, as well as psychological and educational operations.