I'm not sure you understand the meaning;

Rating: Null/10 (3 December 2007)

At the end of the film is a 5 minute rant about why America is supposedly great; it actually says "after Pearl Harbor all America knew was victory", obviously the writers had never heard of Vietnam.
--- Uhm, you have to remember this film was based on ww2 and Decemeber 1941 where pearl harbor was attacked saying "After Pearl Harbor all America knew was victory" just meant that when they were attacked they thought of defeat, but once the Doolittle raid happened, they had hope, and they figured they could win and victory was possible.
Its doesn't matter if the writers never heard of Vietnam, since this was based in 1941 and no one knew Vietnam was going to happen.
Its not based on us today, in like 2007 looking back on Pearl Harbour 1941 and our opinion on it, its about 1941 Pearl Harbour and what happened