The A09.4 was one of the standard uniforms of the Imperial Army

Imperial Army (Sith Empire) Organization Reconstituted Sith Empire

during the Great Galactic War

Great Galactic War Event Great Galactic War (3681BBY - 3653BBY)

and beyond.
Gray and completed with a black belt, gloves and boots, it was utilitarian and simple. Additional equipment included a standard backpack, a heavy belt with multiple pouches, and heavy protective gloves. It could be used either with light

GE05 A09.4 Helmet Armor Helmet

or advanced

GE05 A09.4 Advanced Helmet Armor Helmet

GE05 helmet.
Variants
Components