It may be misused, yes - as is true of most words.
Nanking, no, because civilians were targeted - which is and was a war crime. In a nutshell, if I shoot at you, a civilian, or drop a bomb aimed at your house, it's illegal; if I shoot at the enemy soldier next to you, or drop a bomb on the barracks next door to your house, that's fine, even if you die as a result.I imagine the citizens of Dresden would question the legality. As would the citizens of London, Tokyo, Hiroshima and Nagasaki. What about Nanking, then? Would the atrocities performed there be considered a "legal" act? They were, after all, supporting the enemy.
Conflating "little or no military significance" misses the point, since the law protects only the latter situation. The general consensus seems to be that they had little military significance, which makes the attacks lawful. (In 1963, a Japanese judicial review disagreed, but the ruling rested in part on a piece of international law which had been drafted but never actually signed or accepted.)Exactly! It's doubtful that the bombing of Dresden, for example, did anything to "hurt" the German military. They were already hurt badly, and the actual area of the city destroyed had little or no military significance. It can be argued that it was, indeed, an act of terror. And I will agree that the acts perpetrated on 9/11/01 were acts of terror as well, by anyone's definition. My only point is that those who committed the acts, whether in New York or Germany, were considered patriots by their own people.
You're getting caught in false dichotomies here, too. Most of the 9/11 hijackers, along with bin Laden himself, are arguably considered traitors not patriots, being Saudi nationals (at least until they revoked OBL's citizenship) - a country which was, at the time, partly defended by the US military from the hostile country next door - and of course whether their actions were considered patriotic or not by their own supporters, it doesn't stop them also being terrorism. McVeigh's antigovernment actions probably have a better claim to the "patriot" label from his supporters than Al Qaeda's, considering that group doesn't even have a home country or common nationality, but certainly qualify as terrorism, don't they?