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 North American Electric Reliability Corporation 7 United States. Air Force 6 United States. Central Intelligence Agency 4 Center for Naval Analyses 4 European Food Safety Authority 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 Center for Army Analysis (U.S.) 3 Foreign Service Institute (U.S.) 3 Hoover Institution Library & Archives 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 CNA Corporation 2 Canada. Department of National Defence 2 Carnegie Mellon University 2 Great Britain. Ministry of Defence 2 Mitre Corporation 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 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 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 Verlag E.S. Mittler & Sohn 1 World Bank

145 Reports 71 Thesis 34 Articles 29 Games 27 Research 22 Memorandums 9 Book reviews 9 Monographs 7 Manuals 6 Catalogs 4 Interviews 2 Technical manuals 1 Game reports 1 Meeting minutes 1 Presentations 1 Press releases

390 English 1 Russian

64 Defense/War Department 53 Military (officers and civilians) 30 Land/Ground 30 Real country 29 Naval 27 Air 25 Unclassified 18 Academic 18 Declassified 18 Interstate conflict 18 Subject Matter Experts (SMEs) 14 Strategic planning 13 Nuclear 8 Land/ground 8 State Department/Foreign Ministry 7 Humanitarian 7 Logistics 6 Cyber 6 Information Technology 5 Hoover Institution Library & Archives collections 5 Made-up countries 5 Students 5 Think Tank 4 Climate/Environmental disaster 4 Economic 4 Intra-state violence 4 Missiles 4 Public health crisis 4 Space 3 Counterinsurgency (COIN) 3 Pandemic/Biological disaster 3 Pricing/Markets 2 EW 2 Executive Cabinet 2 Food crisis 2 Nuclear warfare 2 Private Industry 2 Terrorism 1 AI/Autonomy 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 Democracy 1 Government 1 Great Power competition (GPC) 1 Ground combat 1 Human Relations/Labor 1 Humanitarianism 1 International Organization 1 International relations 1 Military 1 Military history 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 Sandhurst Kriegsspiel 1 Special operations forces (SOF) 1 State building 1 Tank loss rates 1 Teaching 1 Unconventional warfare (UW) 1 Virtual

35 Military campaign game 26 3+ Moves 25 Strategy/Crisis game 23 Multi-sided 15 2 Sides 15 Deterministic/Stochastic 13 20-100 Players 12 Board game 12 Hybrid 12 Tabletop game 11 Real countries/players 11 Virtual interface 9 Free/Open Adjudication 8 2 Players 8 Disaster game 8 Strategic crisis game 7 1 Side 6 6-20 Players 6 Strategic crisis games 5 3+ moves 5 Analytic game 5 Historical game 5 Large player game 4 100+ Players 4 2 Moves 4 20+ players 4 Fictional countries/players 4 Observational/Brainstorming game 3 1 Move 3 Experimental game 3 Military campaign games 3 Semi-rigid Adjudication 3 Semi-rigid adjudication 3 Think-tank games 2 1 Player 2 1 side 2 1.5 Sides 2 2 sides 2 3-5 Players 2 Business game 2 Counter-insurgency game 2 Declassified games 2 Free/open adjudication 2 Historical games 2 Large player games 2 Politico-military games 2 Real country 2 Small player game 1 2 moves 1 3 moves 1 7 sides 1 Analytic games 1 Computer simulation 1 Counterinsurgency games 1 Disaster games 1 Educational games 1 Experimental games 1 Force ratios 1 Governance game 1 Multi-moves 1 Rigid adjudication 1 Small player games 1 Two sides