Abstract preface. Foreword: from theory to practice (G. Sullivan). Setting the Stage. Out-of-the box leadership challenges: an introduction (J.G. Hunt et al.). Leadership in an open army? Civilian connections, interorganizational frameworks, and changes in military leadership (B. Shamir, E. Ben-Ari). Leadership Decision-Making in Time-Constrained, Electronically Networked Organizations. Organizational morphing: the challenges of leading perpetually changing organizations in the twenty-first century (W.S. Sherman et al.). Decision-making requirements for future organizational leaders: a creative action-based approach (D.T. Ogilvie, F. Hauge). Leadership and decision processing in twenty-first century technical organizations (J.P. VanDevender, J.R. Barker). Social, Cognitive and Behavioral Leadership Requirements. Behavioral complexity and the development of military leadership for the twenty-first century (R. Hooijberg et al.). Social complexity and the competencies required for effective military leadership (S.J. Zaccaro). In search of the self-led soldier: army leadership in the twenty-first century (C.P. Neck, C.C. Manz). Leadership in Interorganizational Networks. The social capital of twenty-first century leaders (D.I. Brass, D. Krackhardt). Leadership in the peacekeeping army of the future (M. Gurstein). Short and Long-Term Leadership Training and Development Strategies. Conceptual capacity as competitive advantage: developing leaders for the new army (M.L. McGee et al.). US army leadership in the twenty-first century: challenges and implications for training (G.B. Graen, Chun Hui). Concluding Commentary. Leadership competencies required for the new army and approaches for developing them (G. Yukl). Postscript: leadership and organizational overtones of the twenty-first century army (L. Wong, C.A. Duran). Afterword: leadership (D.J. Reimer). Biographical summaries. Index.