Officials said the commanders will face a challenge of continuing training of Afghan forces while overseeing the extraction of tons of equipment and thousands of soldiers over the course of the year.

WSJ: Obama to Draw Down Troops in Afghanistan

U.S. officials acknowledged that commanders will face a challenge of continuing to train Afghan forces while overseeing the extraction of tons of equipment and thousands of soldiers over the course of the year.

WSJ: Obama to Draw Down Troops in Afghanistan

The Defense Secretary's leadership challenge is to encourage his regional commanders to think beyond the borders assigned to them.

WSJ: Into Africa