And here's the Wikipedia entry for "Operational Warfare." :idunno:
Operational warfare
From Wikipedia, the free encyclopedia
Operational warfare is, within warfare and military doctrine, the level of command which coordinates the minute details of tactics with the overarching goals of strategy.
The operational level is at a scale bigger than one where line of sight and the time of day are important, and smaller than the strategic level, where production and politics are considerations. Formations are of the operational level if they are able to conduct operations on their own, and are of sufficient size to be directly handled or have a significant impact at the strategic level. This concept was pioneered by the German army prior to and during the Second World War.
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http://en.wikipedia.org/wiki/Operational_warfare