The plan, at least so far as I could tell, was for the Vietnamese to establish small hamlets way out in the Plain of Reeds, and build small defensive compounds for their protection. I didn't question this strategy at the time, but as I matured in my concept of "pacification", it was a flawed plan, especially with the troops who garrisoned these compounds.
If a purely defensive posture is maintained, it leaves the insurgents free to chose when and where to act. Lessons learned from defeating the Mau-Mau, and making progress against foes like the Shining Path, or hunting down Che. You have to take the battle to them, and maintain pressure with the initiative. Make the enemy react to you, not the reverse of that.
Anyway, out in the Plain, the locals could not farm, but only try to fish. The local troops had no interest in doing anything other than drinking and sleeping, once they built their sanctuary.
It was futile fore me to try to change that mindset.
When a unit in contact communicates with supporting air assets and marks their position with smoke, you would not say. ".. I have yellow smoke out at my position'. because Chuck would be listening in and also throw yellow smoke.
So you would just say "... smoke out." and let the pilots confirm your color. But it was necessary to try to confuse the listening enemy by the pilot not just saying '.... I have yellow."
So I tried to teach slang phrases the pilots would use like "... I had banana for breakfast", or "...I like cherry pie".... or "... I had grape nuts for breakfast.." or if white smoke, "... our leader lives in a white house".
As you can imagine it was hopeless. My assistant and I would hang around for a week or so, eating the local rice and soy sauce and whatever was around, usually duck in some fashion. Our pickup would be some chopper flying around the area on this or that task.
When I would get back to my own compound, time for a hot shower and chow, clean my weapons, and see what was happening in the world.
I was a MAT leader for six months in this capacity, and it seemed to me that the time passed very quickly. My jungle fatigues were becoming a nice worn and ragged appearance, important when I would have a meal up at the Officer's Club in Saigon. Sort of a way to show a "been there, done that" look.
All the best, and stay safe. SF VET