Roundel

The term is used in heraldry, but also commonly used to refer to a type of national insignia used on military aircraft, generally circular in shape and usually comprising concentric rings of different colours.

Similar national cockades, with different ordering of colours, were designed and adopted as aircraft roundels by their allies, including the British Royal Flying Corps and Royal Naval Air Service, and (in the last few months of the war) the United States Army Air Service.

After the First World War, many other air forces adopted roundel insignia, distinguished by different colours or numbers of concentric rings.

The term "roundel" is often used even for those military aircraft insignia that are not round, like the Iron Cross-Balkenkreuz symbol of the Luftwaffe or the red star of the Russian Air Force.

[citation needed] Among national flags which display a roundel are the flags of Bangladesh, Belize, Brazil, Burundi, Dominica, Ethiopia, Grenada, India, Japan, Kazakhstan, Kyrgyzstan, Laos, Mongolia, Namibia, Niger, North Korea, North Macedonia, Palau, Paraguay, Rwanda, South Korea, Republic of China (Taiwan), Tunisia, and Uganda.