In light of a shrinking force structure and limited resources despite increasing global commitments, the report provides a range of recommendations in three distinct time horizons to help Army leaders build the next Army successfully. From the Army Today, 2016-20, the Army of Tomorrow, 2020-25, and the Army of the Day After Tomorrow, 2025-40+, Lieutenant General David Barno (Ret.) and Nora Bensahel offer fresh ideas that spark debate, challenge hoary assumptions, and animate the need for change.