James Mattis

Top aides have told various news outlets that roughly 3,500 to 5,000 additional U.S. troops are needed in Afghanistan.

A decision on the fate of currently serving transgender service members will be issued by late February.

Retired Gen. James Mattis told Donald Trump that giving beer and cigarettes to terror suspects works better than...

While attending an inaugural ball, the new commander-in-chief spoke -- via video -- to troops deployed in Afghanistan.

Here are the stories generating the most comments this week on Military.com, along with a sampling of responses.

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.