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Operational definition, Operational auditing, Operational semantics, Operational level of war, The Operational Art of War, Operational system, Operational conversion unit, Operational View, Operational risk, Operational Requirement, Operational Group (Poland), Journal of the Operational Research Society, Standardized approach (operational risk), Operational acceptance testing, Operational Service Medal, Operational amplifier, Operational risk management, The Operational Art of War Vol. 1: 1939–1955, Operational Test and Evaluation Force, Operational excellence, Director, Operational Test and Evaluation, Operational historian, Operational Research Society, Operational database, Operational Land Forces Command, Operational artificial intelligence, Australian Operational Service Medal, Operational Service Medal for Afghanistan, Operational manoeuvre group, No. 237 Operational Conversion Unit RAF, Common operational picture, Operational due diligence, Operational data store, Geostationary Operational Environmental Satellite, Operational Land Imager, Operational Command South, Operational bill, No. 226 Operational Conversion Unit RAF, Common Operational Datasets, Operational Mentoring and Liaison Team, The Journal of Operational Risk, 25th Operational Weather Squadron, Independent Operational Group Narew, Operationalization, Operational Medical Orderly, The Operational Art of War II: Modern Battles 1956–2000, Operational modal analysis, No. 55 Operational Training Unit RAF, No. 240 Operational Conversion Unit RAF, Operational plan, 9th Operational Weather Squadron, Tavria operational-strategic group, Operational technology, 11th Operational Weather Squadron, Local operational picture, Commander Fleet Operational Standards and Training, Operational transconductance amplifier, 21st Operational Weather Squadron, 26th Operational Weather Squadron, Operational Command North, 15th Operational Weather Squadron, Operational Service Medal for Sierra Leone, No. 2 (Coastal) 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Operational Training Unit RAF, List of Royal Air Force Operational Training Units, Operational Service Medal (Canada), Hungary-United States Operational Mentor and Liaison Team, Polish Operational and Systems Research Society, International Operational Service Medal