rule about corrupt president of south vietnam

I'm currently watching a documentary about vietnam war, and Siam was the evil dictator of the south, that America backed. This is what is being said about his troops:

Feels awfully relatable to current times.

Here's a link to the full documentary, in case anybody wonders:

https://archive.org/details/kenburnsvietnam

The scenes are from the second part of the documentary, at minute 44:00.

it's a 10-piece documentary (each piece lasts about 1.5 hours). it's free to watch though!