James Mattis

Former U.S. Secretary of Defense Jim Mattis testified Wednesday in the trial of fallen tech star Elizabeth Holmes.

Retired Marine Gen. James Mattis is a legend in the military.

Bing West's new novel, The Last Platoon, is a cautionary tale about America's "Forever War."

As supporters of the president stormed the U.S. Capitol, former defense secretaries urged him to stop the violence.

President Donald Trump's first secretary of defense delivered a sharp rebuke to him Wednesday night.

Ten former defense secretaries said the election results are valid and Joe Biden won.

The former SecDef published a piece in Foreign Affairs on Monday warning against abrupt departure from Afghanistan.

The Marine Corps is also adding a new podcast to the list, which will come out at least every two weeks.

Mattis gave a moving and pointed tribute to the legacy of singer, songwriter and former enlisted sailor Bill Withers.