In the United Kingdom, campaign bars are usually known as clasps and when the ribbon alone is worn they are sometimes indicated by rosettes, although this is not commonly authorised. Examples of ones that were issued are the "under enemy fire" clasp on the 1914 Star and the Battle of Britain clasp on the 1939-45 Star. In the United States Military, Service stars are used to indicate participation in multiple battles or campaigns, although the World War I Victory Medal had an extensive system of bars.
In both the United Kingdom and the United States Military, campaign indicators use clasps or service stars to denote participation in various battles or campaigns. The United Kingdom uses rosettes for campaign bars when only the ribbon is worn, while the United States employs service stars similarly.