How did John Ford, John Wayne, and Ward Bond start making movies together?

In the 1920s, John Wayne was a University of Southern California student who worked as a laborer and bit player on the Fox lot, where he got to know director John Ford.

In 1929, Wayne and fellow USC football player Ward Bond came out to Annapolis with the entire USC football team to appear in Ford’s movie about the Naval Academy, Salute.

The three remained friends and collaborators from then on.