Exceptions include the French Navy and Italian armed forces, which use, respectively, embroideries or different varieties of chin straps on the officers' cap bands to indicate seniority.
Although the use of the term is principally military, some civilians (such as airline and merchant ship captains, and senior uniformed law enforcement officers) have similar embellishments on the peaks or visors of their hats.
In the United States armed forces and United States Uniformed Services, "scrambled eggs" is the nickname for the golden oak leaf and acorn embellishments (known as fretting) on the bills (visors) of framed service and dress uniform caps (called service caps in the Army, combination covers in the Navy and Coast Guard, barracks covers in the Marine Corps) worn by field grade and general officers in the rank and grade of major (O-4) or higher in the Army and Marine Corps, and senior and flag officers in the rank and grade of commander (O-5) or higher in the Navy and Coast Guard.
The difference in grades when an officer assumes the wearing of embellishments is peculiar to the individual customs and traditions of each service.
"Eggs" is also used to nickname the leaf-shaped visor decorations on the peaked caps of merchant ships' captains also indicated as shipmasters and airline pilots.