36 United States. Department of Defense 34 United States. Joint Chiefs of Staff 33 U.S. Army Command and General Staff College 30 Naval Postgraduate School (U.S.) 29 Naval War College (U.S.) 20 Air Force Institute of Technology (U.S.) 20 U.S. Army Research Laboratory 17 North Atlantic Treaty Organization 17 United States. Department of State 16 United States. Army 10 Army War College (U.S.) 8 United States. Department of the Air Force 8 United States. Department of the Army 7 Center for Naval Analyses 7 North American Electric Reliability Corporation 7 United States. Air Force 6 European Food Safety Authority 6 United States. Central Intelligence Agency 4 CNA Corporation 4 National Defense University 4 United States. Joint War Games Agency 3 Air University (U.S.) 3 Army War College (U.S.). Center for Strategic Leadership and Development 3 Foreign Service Institute (U.S.) 3 Hoover Institution Library & Archives 3 Mitre Corporation 3 U.S. Army Combined Arms Center 3 United States. Advanced Research Projects Agency 3 United States. Animal and Plant Health Inspection Service 3 United States. Department of Defense. Office of the Secretary of Defense 3 United States. Department of State. Office of the Historian 2 Canada. Department of National Defence 2 Carnegie Mellon University 2 Center for Army Analysis (U.S.) 2 Great Britain. Ministry of Defence 2 National Intelligence Council (U.S.) 2 Royal Military Academy, Sandhurst 2 Sandia National Laboratories 2 United States. Army Training and Doctrine Command 2 United States. Department of the Navy 2 Verlag E.S. Mittler & Sohn 1 Abt Associates 1 California. Department of Food and Agriculture 1 Canada 1 Center for Army Lessons Learned (U.S.) 1 Center for a New American Security 1 Curtis E. LeMay Center for Doctrine Development and Education 1 Defence Academy of the United Kingdom 1 Defence Science and Technology Group (Australia) 1 Defence Science and Technology Organisation (Australia) 1 Defense Technical Information Center (U.S.) 1 European Central Bank 1 Germany. Bundestag 1 Great Britain. Royal Navy. Women's Royal Naval Service (1939-1993) 1 Great Britain. War Office 1 Great Britain 1 Hudson Institute 1 Joint Forces Staff College (U.S.) 1 Joint Military Intelligence College (U.S.) 1 Massachusetts Institute of Technology 1 NATO Defense College 1 National Archives (Great Britain) 1 National Defense University. Center for Strategic Research 1 National Security Council (U.S.) 1 Naval History & Heritage Command (U.S.) 1 Naval War College (U.S.). Cyber and Innovation Policy Institute 1 Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek 1 Nonproliferation Policy Education Center 1 Northrop Grumman Information Technology (Firm) 1 Peacekeeping and Stability Operations Institute 1 Poland. Państwowa Inspekcja Sanitarna 1 Rand Corporation 1 Research Analysis Corporation 1 Royal Armament Research and Development Establishment (Great Britain). Basic Research and Weapon Systems Analysis Division 1 Sweden 1 U.S. Army Command and General Staff College. School of Advanced Military Studies 1 U.S. Army Concepts Analysis Agency 1 United States. Air Force Space Command 1 United States. Air Force. Strategic Air Command 1 United States. Central Command 1 United States. Department of Agriculture 1 United States. Department of Homeland Security. National Cyber Security Division 1 United States. Department of Transportation 1 United States. Federal Aviation Administration 1 United States. Government Accountability Office 1 United States. Joint Forces Command 1 United States. Marine Corps 1 United States. National Military Command System Support Center 1 United States. Office of the Secretary of Defense for Net Assessment 1 United States. War Department 1 University of Louisville 1 World Bank

148 Reports 71 Thesis 34 Articles 29 Games 28 Research 22 Memorandums 13 Monographs 12 Interviews 9 Book reviews 9 Manuals 6 Catalogs 2 Presentations 2 Technical manuals 1 Game reports 1 Meeting minutes 1 Papers 1 Press releases

395 English 3 German 1 French 1 Polish 1 Russian 1 Slovak 1 Turkish

3 Hoover Institution Library & Archives collections

28 Defense/War Department 21 Military (officers and civilians) 17 Declassified 17 Naval 15 Air 14 Land/ground 13 Interstate conflict 9 Nuclear 8 Unclassified 6 Real country 6 Subject Matter Experts (SMEs) 5 Strategic planning 3 Academic 3 Counterinsurgency (COIN) 3 Cyber 3 Hoover Institution Library & Archives collections 3 Humanitarianism 3 Teaching 3 Think tanks 2 Information Technology 2 Land/Ground 2 Nuclear warfare 2 Sandhurst Kriegsspiel 2 Students 2 Terrorism 2 Think Tank 1 AI/Autonomy 1 Army After Next 1 Artillery expenditure 1 Authoritarian 1 CHI Games 1 Casualty rates 1 Civil-military relations 1 Convenience sample (public) 1 Crisis management 1 Cyberinfrastructure 1 Defense/war department 1 Engineers 1 Government 1 Great Power competition (GPC) 1 Ground combat 1 International relations 1 Intra-state violence 1 Logistics 1 Military 1 Military history 1 Military operations on urbanized terrain (MOUT) 1 Missiles 1 Multinational naval cooperation 1 Naval operations 1 Operations other than war 1 Peacekeeping 1 Politics 1 Rate of advance 1 Resistance 1 SIGMA Games 1 Space 1 Special operations forces (SOF) 1 State Department/Foreign Ministry 1 State building 1 Tank loss rates 1 Unconventional warfare (UW) 1 Virtual

14 Real countries/players 10 Multi-sided 9 Military campaign games 8 Strategic crisis games 6 20+ players 5 3+ moves 4 3+ Moves 4 Fictional countries/players 4 Military campaign game 3 2 sides 3 Free/open adjudication 3 Semi-rigid adjudication 3 Strategy/Crisis game 3 Think-tank games 2 1 side 2 2 Moves 2 20-100 Players 2 Analytic games 2 Declassified games 2 Disaster games 2 Educational games 2 Experimental game 2 Free/Open Adjudication 2 Historical games 2 Hybrid 2 Large player game 2 Large player games 2 Politico-military games 2 Strategic crisis game 2 Tabletop game 1 1 Side 1 1.5 Sides 1 100+ Players 1 2 Sides 1 2 moves 1 3 moves 1 3-5 Players 1 6-20 Players 1 7 sides 1 Analytic game 1 Computer simulation 1 Computer-assisted games 1 Counterinsurgency games 1 Disaster game 1 Experimental games 1 Force ratios 1 Governance games 1 Multi-moves 1 Real country 1 Rigid adjudication 1 Semi-rigid Adjudication 1 Small player game 1 Small player games 1 Tabletop games 1 Two sides 1 Virtual interface