page_title: Military aircraft insignia
section_title: Fin flashes
hierarchical_section_title: Military aircraft insignia / Fin flashes
caption_attribution_description: Avro Vulcan at RAF Waddington (showing serial XM607)
context_page_description: Military aircraft insignia are insignia applied to military aircraft to identify the nation or branch of military service to which the aircraft belongs. Many insignia are in the form of a circular roundel or modified roundel; other shapes such as stars, crosses, squares, or triangles are also used.
  Insignia are often displayed on the sides of the fuselage, the upper and lower surfaces of the wings, as well as on the fin or rudder of an aircraft, although considerable variation can be found amongst different air arms and within specific air arms over time.
context_section_description: In addition to the insignia displayed on the wings and fuselage, a fin flash may also be displayed on the fin. A fin flash often takes the form of vertical or slanted stripes in the same colours as the main insignia. Alternatively, a national flag may be used on the fin.
caption: Low-visibility Royal Air Force fin flash on the fin of an Avro Vulcan
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