Why was Vietnam considered a “different kind of war?”

Unlike the second world war, there was moral ambiguity in Vietnam. America faced an ill-defined enemy that was hard to distinguish from civilians. There were American atrocities and massacres of unarmed civilians. It was hard to portray this war as "good" versus "evil", as had been the case during the Second World War.

there was moral ambiguity in Vietnam. America faced an ill-defined enemy that was hard to distinguish from civilians. There were American atrocities and massacres of unarmed civilians. So in this war there was actuality  no real good or bad guy

Explanation:

I guess you would be the writer and reporter who would write down the biggest battle of the second punic war. Text or outside authoritative sources would mean either taken from the text in your homework, or you just search what you need through websites that give you useful information. And answer the questions the two people will ask you.