Old Title: The wings attached to Dol Amroth chestplate should make a loud rustle sound while riding a horse.
There is a very propable theory that wings of Polish Hussars were used to frighten enemy horses with a loud sound they were making during the charge.
Why should this not be a thing with the Swan Knight wings? The sound would be a loud rustle and it would become even louder during the full gallop.
I don't know if the sound should actually make enemy calvary units go a little bit crazy, but that would be a cool feature as well.
Sorry for bad English
EDIT: Shortened title, ~Sam