How did the brother die?

This has already been asked. or were you too busy to scan the whole page of previous topics?

Perhaps the OP just wants to reach out for some sense of community.

I don't think it is important to the point of the film. The emotions are whats important. The movie is more of a symphony or a prayer than a traditional narrative film.

Suicide like Malick's own brother in real life. The film is a loose autobiography, so the suicide isn't implicit but implied.

He died in a car crash. It's explained in the trivia section.

VIVA LA VINYL

I thought brother died because he jumped off the bridge and killled himself

It is based on the directors real life who also had two brothers. One committed suicide at 19 and the other died with his wife in car fire.

In the film, the first brothers death(19 yr old) is not explained. The second brother is shown with burned head wound @ 1 hr 53 min. Later he disappears which is not explained either.

Although(in the film) the cause of death of the two brothers is not important. It rather focuses on the "loss itself" and its effect on family. God, religion and philosophy is used to assist in the grieving process:

"I'm a believer in you god. My allegiance is to you and only you. I am fully loyal to you. So why have you given this life of tragedies to me? WHY ME?"