http://www.cc.gatech.edu/~tpilsch/INTA4803TP/Articles/Three%20Levels%20of%20War=CADRE-excerpt.pdf
I could find links about two levels - that is like arguing word meanings. The two level concept is valid.
Trump obliterated Hillary like no one else has. Be objective and honest about it.
That is both strategic and tactical. It’s both forest and trees. It’s 10,000 feet and in the weeds. Not like a dog yapping at one tree thinking it’s the whole forest.
Did you know that in the US “operational” was rarely used to describe a level of war until after the early 80s? That doesn’t mean it didn’t exist in practice - obviously it was part of the tactical level.
“Tactics is knowing what to do when there is something to do. Strategy is knowing what to do when there is nothing to do.” - Savielly Tartakower