Richard Marcinko, who has died at the age of 81, made his mark on the US military as founding commander of Seal Team Six, one of America's elite special forces units which would later carry out a deadly raid on Osama Bin Laden. A Vietnam War veteran, he led the group for its first three years, and was awarded more than 30 medals and citations during his career with the US Navy. His direct and abrasive leadership style brought him great success but often caused conflict with superiors...