Army Shifts Strategy to Face New Threats

The Army is unveiling a new global strategy for reshaping the largest American military force for a world where the U.S. faces many small and indirect threats, rather than just a few large ones.

The policy shift draws on the lessons the Army has learned in Iraq and Afghanistan, and is meant to help prepare for a future of disparate threats, such as those involving extremists in Iraq, instability in North Korea and Russian aggression in Eastern Europe.

While the Army has long defined its core mission as winning wars,...