War is war under Hague. If a war exists, certain legal rules apply.

Armed conflict is armed conflict under Geneva. If an armed conflict exists, certain legal rules apply.

To some, "war" (and perhaps "armed conflict" - neither defined exactly as I have defined them in two sentences) includes certain basic military principles - whereas warfare (literally, the conduct or journey iinto war) varies over the ages. That is what I glean from Wilf.

That is not what I define in the first two sentences, which are in themselves not subject to reasonable argument ....

But, as as to the "certain" rules that do apply and their interpretation in a given set of facts, we have plenty of legal arguments

Regards

Mike