A battle honour is an award of a right by a government or sovereign to a military unit to emblazon the name of a battle or operation on its flags ("colours"), uniforms or other accessories where ornamentation is possible. In European military tradition, military units may be acknowledged for their achievements in specific wars or operations of a military campaign. In Great Britain and those countries of the British Commonwealth which share a common military legacy with the British, battle honours are awarded to selected military units as official acknowledgement for their achievements in specific wars or operations of a military campaign. These honours usually take the form of a place and a date (e.g. "Waterloo 1815"). Theatre honours, a type of recognition in the British tradition closely allied to battle honours, were introduced to honour units which provided sterling service in a campaign but were not part of specific battles for which separate battle honours were awarded.