What were fighting conditions in the Vietnam War?

If you are speaking of the fighting conditions other than the enemy, here are a few of the things the fighting American had to deal with in Vietnam - and this is outside of the mental Pressures.
* Extreme heat
* Heat exhaustion
* Sun burn
* dehydration
* Red dust
* jungle rot
* Bush snakes
* Spiders
* Rats
* Leeches
* Poisonous centipedes
* Fire ants * Scorpions
* malaria * Monsoon season (constant and extended heavy rain)
* Blisters