Prior to his appointment as Director of the Central Intelligence Agency, David Petraeus was a four-star general in the United States Army who capped a brilliant career by leading the campaigns that turned the tide of battle in both Iraq and Afghanistan. In his 37 years in the Army, Petraeus held leadership positions in airborne, mechanized, and air assault infantry units in Europe, the United States, and the Middle East. In 2003, he commanded the 101st Airborne Division in the assault on Baghdad. Hailed as "the world's leading expert in counter-insurgency warfare," he literally wrote...