Methodological approach to the study of organizational culture gave rise to an economy of explanation which requires three levels of analysis: integration, differentiation, and fragmentation. Studies were classified as integrationist if they assumed or supported the idea of broad coherent patterns across the organization and/or placed an emphasis on a stable set of ideas, values, and norms characterizing the organization as a whole. Studies were classified as differentiated if they looked at specific groups or subcultures within the organization. Studies were classified as fragmented if they looked at the multiplicity of views (no consensus) and complexity focus (not clearly consistent or inconsistent). Army culture reflects the impulse to order (integration) the chaos (fragmentation) of warfare. The cross-pull between order and chaos is a key principle of army culture. Since the chaos of peace operations is qualitatively different from the chaos of war, the structuring of that chaos is bound to change.