“Considering the requirements of training, the People’s Liberation Army (PLA) established an ‘Online Blue Army’ in order to enhance Chinese troops’ network protection level, said Senior Colonel Geng Yansheng, spokesperson for the Ministry of National Defense as well as director-general of the Information Office of the Ministry of National Defense, at a press held on May 25, 2011.”
Source: PLA establishes ‘Online Blue Army’ to protect network security – People’s Daily Online