Do you mean, "is influenced by history of THEIR troops and THEIR country?"
Good explanation that makes a lot of sense. Such American displays are Patriotic and Nationalistic, but I disagree with the use of the term Chauvinisitc to describe them.
And while I think I understand that phrases like: "The best country in the world." are not meant derogatory to other countries, they can easily come across like that. But I'm totally aware that while most Americans view their way of life as the best one, they do not want to force their way onto other countries and view their way of life as less worthy.