Prince Henry plays in Navy vs. Air Force polo match in 1937

The video covers a match between Navy and Air Force teams, attended by a fashionable English audience. The Duchess of Gloucester watches as her husband, the Duke, participates with the Air Force team. Despite their efforts, the Navy team scores and ultimately wins the match. Lord Louis Mountbatten, the Navy leader, receives a prize from the Duchess, who is the wife of his opponent.

What new insight or understanding did you gain from this video?