The Pentagon script approval is an option, not a legal mandate. If the Pentagon approves a script the military provides support to the filmmaking in terms of research, equipment, locations, and authenticity. If the film chooses to bypass Pentagon approval, the filmmakers are responsible for everything. Some of the most famous war movies like Platoon and Apocalypse Now did not have Pentagon approval.
One big difference, I have noticed living here in the United States is that there is a prolific amount of media that is very critical of the US armed forces and a lot of content that questions American military involvement. Yes, there is a lot of "Murrica, Number One" chest-thumping. But there is a lot of counter to that as well. Many Vietnam war films didn't shy away from depicting the illegal killings and mass rapes that the US army engaged in. Similarly, many movies have shown the abuse and atrocities committed in the guise of the war on terror.
There have been documented cases of the Indian army engaging in abuse, illegal kills, and rape. But depicting the army as anything but honorable heroes is unheard of. Forget the military, in today's India criticizing any aspect of the government or military is deemed anti-national. On the contrary, training for the US civil and foreign services emphasizes that the civil servant's loyalty is to the country and not to any party, individual, or post - and dissent is considered a right and duty.
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