James “Mad Dog” Mattis Trump Picks Gen. James Mattis As His Defense Secretary retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis more of a reader more of a reader retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis retired Marine Gen. James Mattis