166th Regiment

Operating Enviroment Library

The U.S. Army recognizes that the current and future operating environment is characterized by complexity, uncertainty, and rapid change. The Army anticipates operating in a multi-domain environment, facing peer and near-peer adversaries who employ conventional and unconventional capabilities across the air, land, maritime, space, and cyberspace domains. This complex environment requires the Army to be agile, adaptive, and prepared to conduct operations across the full spectrum of conflict, from peacetime engagement to large-scale combat operations. The Army must be ready to operate in urban areas, as well as austere and remote locations, while contending with increasingly sophisticated threats, such as cyber attacks, electronic warfare, and information operations. To succeed in this dynamic operating environment, the Army emphasizes the importance of readiness, modernization, and leader development to build a more lethal, agile, and resilient force capable of prevailing in multi-domain operations.

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The ArmyU Library System

The Army University Library System (AULS) is a new and better library experience with increased opportunities for academic research, critical thinking, and increased networking of TRADOC library resources all from once place. Visit

Army University Press

The Army University Press is the Army’s entry point for cutting edge thought and discussion on topics important to the Army and national defense. Its suite of publication platforms and educational services includes Military Review, Journal of Military Learning, NCO Journal, traditional battlefield and virtual staff rides, documentary films, and extensive research and published books. Visit.

Center for Army Lessons Learned (CALL)

CALL's drives Army change through leading the Army Lessons Learned Program (ALLP) and delivering timely and relevant information to resolve gaps, enhance readiness, and inform modernization. To accomplish this CALL, executes the Army Annual Plan collecting, analyzing, disseminating, integrating, and archiving lessons learned from tactical to theater/strategic levels.
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