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