USGI ACU Aircrew Combat ShirtAlright buckle in for acronym time with Grandma's couch camo, it's the USGI (United States Government Issue) ACU (Army Combat Uniform) in UCP (Universal Camouflage Pattern) for Aircrew. Part of the A2CU (Army Aircrew Combat Uniform) two piece flight suit Shirt edition! The abomination pattern UCP was upgraded to another soulless multicam looking thing (OCP) and are now out in the wild, in the surplus market. While UCP is a pretty awful camouflage in