What was the name of john Wayne movie that also stars lee Marvin in it about them on a tropical island?

The John Wayne movie that also stars Lee Marvin and takes place on a tropical island is "The Big Trail" (1930).

While it doesn't strictly fit the description, "The Undefeated" (1969) features John Wayne and Lee Marvin as Civil War veterans, and one scene takes place in a brief, tropical setting.

It's important to note that "The Big Trail" was a silent film, and while it has a tropical island setting, it's not as prominent as the rest of the movie.