Research paper over full metal jacket, I need help on SYMBOLS that are used in the movie, please help?

I have a research paper due on thursday over the movie Full Metal Jacket. I really need help with themes, music and symbols used in the movie. To my understanding symbols are whats assumed and what they dont say.. Im pretty much clueless and have everything done except this paragraph, please help

Research paper over full metal jacket, I need help on SYMBOLS that are used in the movie, please help?
i think that Gny. Sgt. Hartman symbolizes the old military and when Leonard 'Private Pyle' Pratt kills him it symbolizes the death of the old military.
Reply:Get with someone who has been in the military because all that stuff has to do with military history and traditions. I was in the mil, but I haven't watched it in forever. You can take that one scene where they are in vietnam and the guy steels the americans camera and tell about how it shows the oppression these people were under. The guy commiting suicide was a symbol of the stress everyone was under to fit in-

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