They didnt call it "E fighting" in WW1, but the concept was there, ie, the tactics of a faster heavier a/c, like a SPAD XIII, vs a more nimble design, like a Fokker Dr1. They understood the basic concepts, without the fancy "Top Gun" school, jet-age terminology. They understood altitude gives you the initiative, and that climb rate was important, as was being able to dive at high speed to escape.