Operators began speaking of BDUs in the 1980s. BDUs were seen as a stepping stone toward fulfillment of the need for tactical gear with greater functionality and advanced camouflage patterns.
Initially, BDUs were designed to accommodate a range of body shapes. They also featured special pockets with multiple easy access openings. As well, they were constructed to permit wearers to enjoy ample freedom of movement. Later, these same BDU characteristics served as building blocks for other types of tactical garments that became mainstays in all branches of the U.S. military before making their way in the mid-2000s to law enforcement and various special units.