Well in 1909 the British teaching of "Military Operations" considered only "Strategical Issues" and Tactics - explicitly stated . Operations were essentially how "Armies" did "stuff". _ "Advancing along a coast line." "Movement by Sea." Success in both Tactics and Strategy required competent and well planned "Operations."
I think what all the above is telling me is that the idea of an "Operational Level" - as popularly conceived, needs to be held to rigour.
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