An aide-de-camp (French for field assistant) is a personal assistant, secretary, or adjutant to a person of high rank, usually a senior military officer or a head of state. The first aide-de-camp is typically the foremost personal aide.
In some countries, the aide-de-camp is considered to be a title of honor (which confers the post-nominal letters ADC or A de C), and participates at ceremonial functions.
The badge of office for an aide-de-camp is usually the aiguillette, a braided cord in gold or other colors, worn on the shoulder of a uniform. Whether it is worn on the left or the right shoulder is dictated by protocol.
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