I'd recommend Band of Brothers, Pvt Ryan, and Bridge Over the River Kwai (just to throw in one that deals with the Pacific conflict indirectly).
IMO, The Thin Red Line was a huge piece of crap. That movie just Stunk. The screenplay is filled with all manner of grandiose pontificating about absolutely nothing. The writers were working so hard to be deep. That movie is an example to me that Hollywood has plenty of shallow people who try to hoodwink the general public that they are intellectuals. I really didn't like that movie. Great visuals and awesome cinematography, however.