James Mattis

The president has "delegated authority to aggressively and in a timely manner move against enemy vulnerabilities," Mattis...

Robert M. Speer, a former assistant secretary of the Army for financial management, has been serving as acting Army secretary...

Defense Secretary Mattis said patient diplomacy rather than military action is the solution to the North Korean crisis.

President-elect Donald Trump might not get the quick approval he wished for if he chooses James Mattis as defense secretary.

Retired Marine Gen. James Mattis arrived at the Pentagon Saturday for the first time as the new secretary of defense.

A top general said more U.S. troops may be needed in Syria to back local fighters in taking the ISIS stronghold of Raqqa.

The top civilian at the Defense Department on Friday warned any military action in North Korea would result in devastation.

Five stories to start your week from Military.com.

The U.S. strategy in the Middle East cannot be the same, linear approach it has been, Defense Secretary Jim Mattis said.

The news came after his transition team said he hadn't yet picked a candidate despite multiple news reports identifying...