The Close Combat Uniform (CCU) was the immediate predecessor of the ACU. It was tested by Stryker brigades (among others) in the 2003 Iraq War. This cut of uniform is most commonly found in Three Color Desert (DCU), Woodland (M81), and Scorpion (Multicam predecessor), though prototype pattern colorways like Urban Tracks have also been reported.
Sample 1: Three Color Desert Pattern
Jacket:
Vertical pockets. 
Less common, later 2004 contract.
Mandarin Collar:
Arm Pockets:
Arm pockets close with snaps instead of velcro like in ACU.
Two-sided metal zipper.
Trousers:
Same 2004 contract date.
Pockets close with velcro.
Side cargo pockets. 
Lower leg pockets.
Button fly:
