UNSC Marine Corps Battle Dress Uniform - Halopedia, the ...
The Battle Dress Uniform as seen in Halo: Combat Evolved was heavily inspired by the armor worn by the Colonial Marines in the film Aliens, which greatly influenced the game. The BDU seen in Halo Wars 2 artwork is an original design, while the one seen in cutscenes and the Know Your Enemy trailer is reused from Halo 2 Anniversary.