1540s, from center French accoustrement (contemporary French accoutrement), from accoustrer probably from Old French acostrer "arrange," initially "sew up" (see accouter)
Dress; trappings; gear; especially, the devices and equipments worn by soldiers.
(n. pl.) Dress; trappings; equipment; particularly, the devices and equipments worn by soldiers.
They need the Internet, mobile phones, computers, and the other accoutrements of the modern age for the wealth they bring.