here ya go:
AR 670-1
29–12. Wear of appurtenances
Appurtenances are devices affixed to service or suspension ribbons, or worn in lieu of medals or ribbons. They are
worn to denote an additional award, participation in a specific event, or some other distinguishing characteristic of an
award. The following appurtenances are authorized for wear on decorations, medals, ribbons and other awards, when
authorized by appropriate authority. When more than one appurtenance is worn, soldiers will ensure all devices are
centered on the ribbon. (See AR 600–8–22 for additional information.)
a. Oak leaf clusters.
(1) A bronze twig of four oak leaves with three acorns on each stem is worn to denote award of second and
succeeding awards of decorations (other than the Air Medal), the Army Reserve Components Achievement Medal, and
unit awards.
A silver oak leaf cluster is worn in lieu of five bronze oak leaf clusters. It is worn to the wearer’s right of a bronze oak leaf cluster and to the left of the “V” device.
I am a soldier, I fight where I'm told, and win where I fight.