I was just a toddler during the Vietnam war.
I never understood why people were so openly disrespectful to returning soldiers. Can’t fathom the thought even for a moment.
In the 71-74 timeframe, we were advised to wear civilian clothes when flying commercial versus our uniforms. I will defer to tet68 on how it was earlier. Note: I went to college on a ROTC scholarship for 1975-78. Always wore my uniform on drill days (Tues/Thurs). Had no issues. Sat in the front of the class too. Good times. :)