One of the best combat movies ...

Rating: 7/10 (8 January 2014)

I consider this movie to be one of the best combat and engagement movies I've ever seen. I've never been in any kind of combat before nor seen any real ones on TV, so I can't really know how real the engagement scenes were. However, compared to other movies, this one to me looks very realistic.
Before the movie ends, I noticed something when the US solider was telling the Afghan guy about the American flag. The Afghan man pointed first at the Texan flag and said: America? The US solider said: Texas. Then the Afghan pointed at the American flag and said: America? Then the US solider said yes, America is Texas. I'm just curious. Was there any political view behind that line?
Hope you all enjoy the movie as much as I did!