Military medal rosettes are small, circular devices that are attached to the ribbon of a medal to denote additional awards or decorations. They are typically made of metal or fabric and are designed to fit onto the ribbon.

Here are some common types of rosettes and what they signify:

Bronze Rosette: In the United States military, a bronze rosette is used to represent a second award of a particular decoration. For example, if a service member receives the same medal multiple times, they may wear a bronze rosette on the ribbon to indicate each additional award.

Silver Rosette: Similarly, a silver rosette is used in place of five bronze rosettes to represent a sixth award.

Gold Rosette: In some cases, a gold rosette is used in place of five silver rosettes to represent a sixth award. This is less common and is specific to certain decorations.

Knot Device: Some military decorations, such as the Medal of Honor, use a knot device instead of rosettes to indicate additional awards. These are small, gold knots that are attached to the ribbon.

Campaign Stars or Numerals: In some countries, particularly in the United States, campaign stars or numerals may be used to represent additional awards. These are small devices shaped like stars or numbers that are attached to the ribbon.

It's important to note that the specific rules and regulations for wearing rosettes and other devices on military ribbons can vary by country and even by individual service branches within a country.

If you have a specific medal or country in mind, I can provide more detailed information.