Throughout the Vietnam War in general the US Army in Vietnam found itself in the same situation the Imperial Japanese Army found itself in WW2 China -- but it seems this was never noticed!
How many people know where Hu Zhi Ming (Ho Chi Min) was in WW2 and what he was doing there?
What the North Vietnamese and the Viet Cong did in the Vietnam war against the US military -- the model was what the Nationalist & Communist guerillas had done to the Imperial Japanese Army in WW2 China.
But WW2 in China had been such a blind spot!
And it's a blind spot even now!