Who is James "Mad Dog" Mattis, Donald Trump's choice for defence? theweek.co.uk

Donald Trump has chosen General James "Mad Dog" Mattis to be his defence secretary, describing him as the "General George Patton" of his generation. The 66-year-old former marine served in Iraq and Afghanistan and has a reputation for bluntness – but what else do we know about him?
He served in Iraq and Afghanistan, is seen as humble and private – but says it's "fun" to shoot some people