The United States Army has adopted a revolutionary transformation strategy to field a future Objective Force that is strategically responsive and dominant across the full spectrum of military operations. As an integral part of this transformation effort, and as an outgrowth of the Army After Next project, The Army Transformation Wargame series capitalizes on over five years of study, wargaming, and analysis of concepts and capabilities beyond 2010. In 2000, the first Army Transformation Wargame showcased The Army Objective Force as a highly deployable, general purpose force that provided enhanced combat power to meet the challenges of the future strategic and operational environments. The Army recently conducted its second Army Transformation Wargame, Vigilant Warriors 01 at Carlisle Barracks, Pennsylvania, from 22-27 April 2001. In this wargame, the depiction of a future major theater war served to illuminate, at a significant level of resolution, the emerging Objective Force concepts and capabilities needed to achieve strategic responsiveness and full-spectrum dominance. This initial report provides a preview of the issues, insights, and conclusions derived during the wargame. It will be followed by a more detailed analysis highlighting the conduct of the wargame and more important, what was learned about the Objective Force. Ultimately, the lessons learned from Vigilant Warriors 01 support the intellectual underpinnings that frame the U.S. Army's importance to the Nation's security and interests.