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in the United States Code.Chapter 1: Council of National Defense Chapter 2: Board of Ordnance and Fortification (repealed) Chapter 3: Alien Enemies Chapter 4: Espionage (repealed/transferred) Chapter 4a: Photographing, Sketching, Mapping, Etc., Defensive Installations (repealed) Chapter 4b: Disclosure of Classified Information (repealed) Chapter 4c: Atomic Weapons and Special Nuclear Materials Information Rewards Chapter 5: Arsenals, Armories, Arms, And War Material Generally Chapter 6: Willful Destruction, Etc., Of War Or National-Defense Material (repealed) Chapter 7: Interference With Homing Pigeons Owned by United States (repealed) Chapter 8: Explosives; Manufacture, Distribution, Storage, Use, And Possession Regulated (repealed) Chapter 9: Aircraft (repealed/transferred/omitted) Chapter 10: Helium Gas Chapter 11: Acquisition Of And Expenditures On Land For National-Defense Purposes (repealed/transferred/omitted) Chapter 12: Vessels In Territorial Waters of United States Chapter 13: Insurrection Chapter 14: Wartime Voting by Land and Naval Forces (repealed) Chapter 15: National Security (transferred) Chapter 16: Defense Industrial Reserves Chapter 17: Arming American Vessels (repealed) Chapter 18: Air-Warning Screen Chapter 19: Guided Missiles Chapter 20: Wind Tunnels Chapter 21: Abacá Production (omitted) Chapter 22: Uniform Code of Military Justice Repealed – see Title 10 of the United States Code Chapter 22a: Representation Of Armed Forces Personnel Before Foreign Judicial Tribunals (repealed) Chapter 23: Internal Security Chapter 24: National Defense Facilities (repealed) Chapter 25: Armed Forces Reserve (repealed/omitted) Chapter 26: Gifts for Defense Purposes (repealed) Chapter 27: Reserve Officer Personnel Program (repealed/omitted) Chapter 28: Status of Armed Forces Personnel Appointed to Service Academies (repealed) Chapter 29: National Defense Contracts Chapter 30: Federal Absentee Voting Assistance (transferred) Chapter 31: Advisory Commission on Intergovernmental Relations (transferred) Chapter 32: Chemical and Biological Warfare Program Chapter 33: War Powers Resolution Chapter 34: National Emergencies Chapter 35: International Emergency Economic Powers Chapter 36: Foreign Intelligence Surveillance Chapter 37: National Security Scholarships, Fellowships, and Grants Chapter 38: Central Intelligence Agency Retirement and Disability Chapter 39: Spoils of War Chapter 40: Defense Against Weapons of Mass Destruction Chapter 41: National Nuclear Security Administration Chapter 42: Atomic Energy Defense Provisions Chapter 43: Preventing Weapons of Mass Destruction Proliferation and Terrorism Chapter 44: National Security Chapter 45: Miscellaneous Intelligence Community Authorities Chapter 46: Central Intelligence Agency Chapter 47: National Security Agency Chapter 48: Department of Defense Cooperative Threat Reduction Chapter 49: Military Selective Service Chapter 50: Servicemembers Civil Relief Chapter 51: War Claims Chapter 52: Restitution for World War II Internment of Japanese Americans and Aleuts Chapter 53: Trading with the Enemy Chapter 54: Merchant Ship Sales (repealed/transferred) Chapter 55: Defense Production Act Chapter 56: Export Administration Chapter 57: Claims Under the Clarification Act Chapter 58: Export Control Reform