Universal Camouflage Pattern - Delta (UCP-D) is a variant of the UCP that adds the Coyote Brown color and uses less of the lighter sand and gray colors than in the UCP. Preliminary research by the U.S. Army's Natick Soldier Systems Center indicates that UCP-D provides improved performance over standard UCP in woodland environments, even when paired with OCIE in the standard UCP.

References

• http://peosoldier.armylive.dodlive.mil/2009/12/15/acu-camouflage-alternatives-2/
• http://armylive.dodlive.mil/index.php/2009/09/acus-new-look/
• http://www.army.mil/-news/2009/09/18/27514-new-cammo-pattern-may-blend-in-better-in-afghanistan/index.html
• https://soldiersystems.net/tag/ucp-delta/