The one that I remember even as a child was a one hour documentary from CBS news called "The World of Charlie Company." This was broadcast in July 1970 (some sources say April) and contains footage from an incident in 1969 when the aforesaid C company of 2nd battalion/7th cavalry refused an order to march down a road under their new commander; AL Rice (the previous commander as leery of doing this and the unit had only 2 fatalities under this commad). It was pretty unnerving for me as a young person to see this on tv, I still recall it.