was discontinued later on, with only the EGA being used by the end of the BDU's tenure with the USMC. The EGA was ironed onto the BDU blouse pocket by USMC recruits at the end of MCRD upon completion of their training to signify their christening as U.S. Marines. The same was done on the eight-pointed "utility cover" hat that was worn with the USMC's version of the BDU. The BDU's successor, the MCCUU, has the EGA embroidered instead of stenciled on the blouse's chest pocket and all covers. U.S. Air Force The U.S. Air Force initially only issued ERDL BDUs to combat arms units stationed overseas, such as United States Air Force Security Forces, Combat Controllers, and United States Air Force Pararescue, as of October 1981, the same time as the Army and Marines. The Air Force did not allow non-combat arms to wear the woodland pattern BDU until the summer of 1987 and mandated them as the only "Fatigue" uniform in 1988. The BDU was no longer authorized for wear in the USAF on November 1, 2011. U.S. Navy Sailors of the United States Navy started issuing the BDU in the new woodland scheme and temperate cut at the same time as the other branches. The U.S. Navy referred to the uniform as the "Camouflage Utility Uniform" (CUU) during its usage. U.S. Coast Guard Coast Guardsmen started issuing the new woodland BDU around the same time as the other service branches. Successors The U.S. military has run trials of many camouflage patterns (some being used by foreign militaries), and issued environment-specific uniforms, notably the six-color Desert Battle Dress Uniform (DBDU), nicknamed the "chocolate chip camouflage", designed in 1962, and the "nighttime desert grid" (NCDBDU). Both uniforms were used in 1991, during the Persian Gulf War. These Desert BDUs were discontinued after the war. The Desert Camouflage Uniform (DCU) in three-color desert camouflage was introduced in 1992, and was utilized in operations in Somalia (1993); it was in service in Afghanistan and Iraq from the start of hostilities, but the U.S. Army and U.S. Marine Corps have both replaced the DCU with newer uniforms (ACU and MCCUU, respectively). In testing, U.S. Army researchers found that, as in other environments, the color of desert terrain varies, and can range from pink to blue, depending on the minerals in the soil and the time of the day. Since patches of uniform