Vietnam War veterans’ mental health comparing to other wars’ veterans

Question

I noticed that a lot of media and publications talk about Vietnam War veterans suffering from PTSD and other psychological/mental health issues.
What was so devastating in this specific war comparing to other wars (i.e. WW1 and WW2) that caused so many vets’ trauma?
Or is it a matter of fact that during previous wars mental health care was less developed?

In: Other

Answer 1

The combat time and style of Vietnam was fundamentally different than previous wars. Ww2 western soldiers had a few weeks of front line duty before being cycled to the rear. Combat was in one direction and the concept of safe not safe was valid. Vietnam, Afghanistan and other gorilla wars have no borders, there is no front line, there is no cycling to rear guard. The constant combat vigilance creates a mental fatigue that breaks people.