Step-by-step explanation:One of the largest disadvantages of American troops in Vietnam was that most people were no older than the average age of 19 with little to no war experience and would commit major war crimes such as raping, murdering, and torturing innocent women and children. And The war in Vietnam was difficult to fight due to the fact that the terrain was so harsh that it made the Americans struggle to survive. There were 58,209 American deaths in the Vietnam war. 10,875 of them were not combat related.