Operational definition, Operational auditing, Operational semantics, Operational level of war, The Operational Art of War, Operational system, Operational View, Operational risk, Operational conversion unit, Operational Requirement, Standardized approach (operational risk), Operational Group (Poland), Journal of the Operational Research Society, Operational acceptance testing, Operational amplifier, Operational Service Medal, Operational risk management, The Operational Art of War Vol. 1: 1939–1955, Operational excellence, Operational Test and Evaluation Force, Operational Research Society, Director, Operational Test and Evaluation, Operational historian, Operational database, Operational artificial intelligence, Operational manoeuvre group, Operational Service Medal for Afghanistan, Operational Land Forces Command, Australian Operational Service Medal, No. 237 Operational Conversion Unit RAF, Common operational picture, Geostationary Operational Environmental Satellite, No. 226 Operational Conversion Unit RAF, Operational due diligence, Operational data store, Operational Command South, Operational Land Imager, Operational bill, Common Operational Datasets, Operational Mentoring and Liaison Team, Independent Operational Group Narew

25th Operational Weather Squadron, Operationalization, The Operational Art of War II: Modern Battles 1956–2000, The Journal of Operational Risk, Operational plan, Operational modal analysis, Operational Medical Orderly, No. 240 Operational Conversion Unit RAF, 9th Operational Weather Squadron, Tavria operational-strategic group, Operational technology, Commander Fleet Operational Standards and Training, 11th Operational Weather Squadron, Operational transconductance amplifier, Local operational picture, 26th Operational Weather Squadron, Operational Command North, 15th Operational Weather Squadron, 21st Operational Weather Squadron, Operational-level agreement, Operational Service Medal for Sierra Leone, Operational stress injury, Operational Silo Test Facility, No. 2 (Coastal) Operational Training Unit RAF, Operational loads monitoring, Dnipro operational-strategic group, No. 228 Operational Conversion Unit RAF, No. 236 Operational Conversion Unit RAF, Naval Center for Combat and Operational Stress Control, Operational design domain, 17th Operational Weather Squadron, New Zealand Operational Service Medal, Strike Attack Operational Evaluation Unit, Bayesian operational modal analysis, No. 2 Operational Conversion Unit RAAF, Ground based operational surveillance system, No. 242 Operational Conversion Unit RAF, Operational Service Medal for the Democratic Republic of Congo, NATO Maritime Interdiction Operational Training Centre, Aerospace Operational Support Group RAAF, Operational responsiveness, Operational efficiency, Joint Operational Support Airlift Center, Current-feedback operational amplifier, Operational transformation, No. 231 Operational Conversion Unit RAF, Marine Operational Training Group 81, No. 5 Operational Training Unit RAAF, 403 Helicopter Operational Training Squadron, Air Force Operational Test and Evaluation Center

Operational definition, Operational auditing, Operational semantics, Operational level of war, The Operational Art of War, Operational system, Operational View, Operational risk, Operational conversion unit, Operational Requirement, Standardized approach (operational risk), Operational Group (Poland), Journal of the Operational Research Society, Operational acceptance testing, Operational amplifier, Operational Service Medal, Operational risk management, The Operational Art of War Vol. 1: 1939–1955, Operational excellence, Operational Test and Evaluation Force, Operational Research Society, Director, Operational Test and Evaluation, Operational historian, Operational database, Operational artificial intelligence, Operational manoeuvre group, Operational Service Medal for Afghanistan, Operational Land Forces Command, Australian Operational Service Medal, No. 237 Operational Conversion Unit RAF, Common operational picture, Geostationary Operational Environmental Satellite, No. 226 Operational Conversion Unit RAF, Operational due diligence, Operational data store, Operational Command South, Operational Land Imager, Operational bill, Common Operational Datasets, Operational Mentoring and Liaison Team, Independent Operational Group Narew, 25th Operational Weather Squadron, Operationalization, The Operational Art of War II: Modern Battles 1956–2000, The Journal of Operational Risk, Operational plan, Operational modal analysis, Operational Medical Orderly, No. 240 Operational Conversion Unit RAF, 9th Operational Weather Squadron, Tavria operational-strategic group, Operational technology, Commander Fleet Operational Standards and Training, 11th Operational Weather Squadron, Operational transconductance amplifier, Local operational picture, 26th Operational Weather Squadron, Operational Command North, 15th Operational Weather Squadron, 21st Operational Weather Squadron, Operational-level agreement, Operational Service Medal for Sierra Leone, Operational stress injury, Operational Silo Test Facility, No. 2 (Coastal) Operational Training Unit RAF, Operational loads monitoring, Dnipro operational-strategic group, No. 228 Operational Conversion Unit RAF, No. 236 Operational Conversion Unit RAF, Naval Center for Combat and Operational Stress Control, Operational design domain, 17th Operational Weather Squadron, New Zealand Operational Service Medal, Strike Attack Operational Evaluation Unit, Bayesian operational modal analysis, No. 2 Operational Conversion Unit RAAF, Ground based operational surveillance system, No. 242 Operational Conversion Unit RAF, Operational Service Medal for the Democratic Republic of Congo, NATO Maritime Interdiction Operational Training Centre, Aerospace Operational Support Group RAAF, Operational responsiveness, Operational efficiency, Joint Operational Support Airlift Center, Current-feedback operational amplifier, Operational transformation, No. 231 Operational Conversion Unit RAF, Marine Operational Training Group 81, No. 5 Operational Training Unit RAAF, 403 Helicopter Operational Training Squadron, Air Force Operational Test and Evaluation Center, Operational Group Ermakov, Independent Operational Group Polesie, Operational Group of Russian Forces, No. 232 Operational Conversion Unit RAF, List of Royal Air Force Operational Training Units, No. 1 Operational Training Unit RAAF, Operational maintenance, List of aircraft carriers operational during World War II, Institute of Operational Risk, Separate Operational Purpose Division, Aeronautical operational control, Operational objective, Operational Detachment Alpha 574, 50th Separate Operational Brigade, 20th Operational Weather Squadron, Clandestine HUMINT operational techniques, High Altitude Venus Operational Concept, Jindalee Operational Radar Network, Operational Dress Uniform, Operational image, Operational reporting, Overall Operational Command, Kakhovka operational group, NOAA National Operational Model Archive and Distribution System, Operational planning, Operational calculus, Operational Response Group, Northwestern Operational Command, Bundeswehr Operational Command, No. 230 Operational Conversion Unit RAF, European Rapid Operational Force, Garda Operational Support, Operations research, Operational Camouflage Pattern, Military operation, Operational due diligence (alternative investments), International Transactions in Operational Research, Second Operational Phase (1942), Operational Collaboration, No. 55 Operational Training Unit RAF, Operational analytical processing, Operational Group Command, Operational Command East, Operational availability, Operational Distinguishing Device, Overall Operational Commander, Flying Boat Training Squadron RAF, Operational Service Medal Iraq and Syria, Croatian Operational Research Society, 28th Operational Weather Squadron, Operational Command West, Hellenic Operational Research Society, No. 53 Operational Training Unit RAF, Polar Operational Environmental Satellites, No. 1 (Coastal) Operational Training Unit RAF, Hungary-United States Operational Mentor and Liaison Team, Operational Service Medal (Canada), No. 111 (Coastal) Operational Training Unit RAF, European Journal of Operational Research, International Operational Service Medal