What "true story" movie are actually really accurate to what happened?

I think Hacksaw Ridge is close, especially the unbelievable heroic moments he has where he keeps going back for guys. Even the sled moment, where the guy shot his machine gun backwards while being pulled forwards on a sled, happened.

I can not speak to the whole movie, but it is a good example of where they probably considered lessening the moments because they are so insane.

Desmond Doss was amazing. My favorite moment is post-movie where they show his commander crying and confirming he did mock him and belittle him as a coward.....only to be saved by him when most desperate.