James Mattis

Defense Secretary James Mattis began his first day at the Pentagon by picking top aides and calling his counterpart in Canada...

The White House and the Pentagon are considering a plan to speed up the campaign against ISIS by sending 1K more troops to...

Secretary of Defense James Mattis said the goal is to take out ISIS militants before they can flee to neighboring countries.

The White House reportedly is balking at Defense Secretary Jim Mattis' plan to send more troops to Afghanistan.

BlDefense Secretary Jim Mattis has made relief to Puerto Rico relief a matter of national defense.

Retired Marine Gen. James Mattis made his first public comments as the nominee for secretary of defense.

Defense Secretary Jim Mattis said NATO was growing stronger against the Russian threat.

Here are five news stories and events to start your week from the editors at Military.com.

President Trump reportedly has clashed with SecDef Jim Mattis on whether to fire Gen. John Nicholson as commander in...

The commitment of U.S. troops to "combat duty" marks a shift from the Obama administration's strategy.