"Accoutrements are the personal/individual equipment of service people such as soldiers, sailors, police and firemen and employees of some private organizations such as security guards, other ...
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than their basic uniform and weapons.
Accoutrements can be intended for field, garrison or ceremonial purposes. Most accoutrements for field use are purely practical in nature.
Ceremonial accoutrements may no longer have a practical purpose in modern operations but may be retained to maintain a tradition. Garrison accoutrements will vary in their usefulness and include both practical and ceremonial/traditional items." - (en.wikipedia.org 20.09.2023)