Only in the minor details. The laws of armed conflict are old; they date back millennia to warrior codes used in ancient Greece. But the modern Geneva Conventions, which govern the treatment of soldiers and civilians in war, can trace their direct origin to 1859, when Swiss businessman Henri Dunant happened upon the bloody aftermath of the Battle of Solferino. His outrage at the suffering of the wounded led him to establish what would become the International Committee of the Red Cross, which later lobbied for rules improving the treatment of injured combatants. Decades later, when the devastation of World War II demonstrated that broader protections were necessary, the modern Geneva Conventions were created, producing a kind of international “bill of rights” that governs the handling of casualties, prisoners of war (POWs), and civilians in war zones. Today, the...