 He was then transported to Hanoi's main Hỏa Lò Prison, nicknamed the "Hanoi Hilton" by American POWs.McCain reached Hỏa Lò in as bad a physical condition as any prisoner during the war.His captors refused to give him medical care unless he gave them military information; they beat and interrogated him, but McCain only offered his name, rank, serial number, and date of birth (the only information he was required to provide under the Geneva Conventions and permitted to give under the U.S. Code of Conduct).