I may have something wrong

In checking, I'm seeing the term NVA as the regular North Vietnamese army. What I remember is the NVR or North Vietnamese regulararmy which differed from the Viet Cong. This comes from people I knew back then who had been there. My own time was in the USAF and spent at a NATO base in Europe so I lucked out combat duty. We had a couple people in the squadron who had done duty in "Nam" and tried to explain the differences. I never caught on. When some guy is pointing a rifle at you I suspect checking out his uniform isn't a priority.