A thrilling story that has inspired novelists and filmmakers: The real-life Spartacus is even more amazing than his fictional counterparts. A slave from Thrace (modern day Bulgaria), possibly of noble origins, he led a shocking rebellion at a gladiatorial school in Capua in 73 BC. Within two years the ranks of his army, which started with fewer than 100 men, swelled to 60,000; they routed nine Roman armies and for a time controlled all of southern Italy. The Roman general Crassus eventually defeated the slave army and while Spartacus apparently died on the field of battle, his body was never recovered. The legend arose that he escaped and remained undefeated...