When the Army updated its guidelines governing the ... Departing Defense Secretary Chuck Hagel.

More than 700 former national security and military officials endorsed Kamala ... as well as Republican secretaries of ...

While Secretary of Defense Chuck Hagel plans to cut "20 percent" of the top officers and senior Defense Department personnel, it seems his cuts don't touch Marine General John Kelly's Miami mansion.

US Defense Secretary Chuck Hagel on Tuesday warned Americans ... and had evolved partly due to America's diplomacy and military strength, Hagel said. He said that "walking away from the world ...