In addition to the danger, what other problems did American soldiers encounter? (This refers to the vietnam war)

The American soldiers faced the corrupt south Vietnamese government. The latter lack coordination, with inhuman treatment of their own troops. Therefore the American solders were faced with the problem of trust. They could not trust the south Vietnamese government and their soldiers. Which cost them the defeat.

In addition, the harsh weather, and the bug were additional problems. They suffered from dehydration and infestation from the bug