Title 50 of the United States Code outlines the role of War and National Defense in the United States Code. * Chapter 1: Council of National Defense * Chapter 2: Board of Ordnance and Fortification (repealed) * Chapter 3: Alien Enemies * Chapter 4: Espionage (repealed/transferred) * Chapter 4a: Photographing, Sketching, Mapping, Etc., Defensive Installations (repealed) * Chapter 4b: Disclosure of Classified Information (repealed) * Chapter 4c: Atomic Weapons and Special Nuclear Materials Information Rewards * Chapter 5: Arsenals, Armories, Arms, And War Material Generally * Chapter 6: Willful Destruction, Etc., Of War Or National-Defense Material (repealed) * Chapter 7: Interference With Homing Pigeons Owned by United States (repealed) * Chapter 8: Explosives; Manufacture, Distr