As a co-author of the military's counter-insurgency manual (with David Petraeus), Mattis has often spoke about following the rules of engagement and being disciplined among a ruthless enemy.

Jim Mattis getting tapped for Secretary of Defense. So much so, in fact, that they posted a picture of the 66-year-old former four-star commander as a saint holding a grenade in one hand and a Ka ...

"For the mission's sake, for our country's sake, and the sake of the men who carried the Division's colors in past battles — carry out your mission and keep your honor clean. Demonstrate to the ...

James “Mad Dog” Mattis as his secretary of defense, telling the audience to keep the news hushed. Meanwhile, at Harvard University's traditionally civil post-election… Wisconsin’s election ...

Mattis demonstrates that he is willing to extend ... While one of his nicknames is "Mad Dog," many other Marines know him as the "Warrior Monk" — a general who reads and studies constantly ...

US Marine Corps General James Mattis, known to his troops as "Mad Dog," is arguably the most famous living Marine. Mattis has served from 1969 to 2013 in the Marine Corps, and during his service ...

Retired Marine Gen. James Mattis is in the running to lead the Pentagon for President-elect Donald Trump, and one thing is absolutely certain: He is eminently quotable. The 66-year-old former four ...