Recently I finished watching a documentatory, The Veitnam War, on Netflix. This is one of the best war documentatory I have ever watched, I have to say. It covers both how the decisions were made in the governments, as well as the experience of soliders and civilians from all sides.
It is a fairly long documentatory, about 20 hours long, but the pace is very good and I don't think it is dragging at all. It revealed a lot of details in the decision making process of the White House, especially the Johnson Administration, which shocks me how stupid they were. Basically Johnson, his advicers, and his generals had no clue who they were actually fighting against, and what is the goal of the war. I think, the Iraq war was quite a similar process, except at the end the ISIS was defeated. At least we don't hear any news about them threating Iraq any longer.
Personally I think the Truman Administration had a great responsiblity on the whole Korean War and Veitnam War. If he supported the Nationalist Chinese, both wars could have be avoided. He only realised how serious the situation was after loss of China.
Highly recommend it for anyone interested in history.