>>216637572 (OP)
they always forget japanese trenches on iwo jima, i mean yes it was only us versus japan but there were miles and miles of trench and fortifications which had to be fought since they were impervious to air raids
>>216638197
That doesn't mean it was a characteristic of the war, one of the biggest defining features if not the biggest defining feature compared to the first war was mobility.
>>216637572 (OP)
They probably want you to answer trenchy warfare, but I could see a case being made for genicide being not part of the war, but an aside.