The PLA General Staff Department Third Department Second Bureau: An Organizational Overview of Unit 61398

This report provides an in-depth organizational overview of the Chinese People's Liberation Army (PLA) General Staff Department Third Department Second Bureau, also known as Unit 61398. It details the bureau's leadership structure, subordinate offices, technical collection infrastructure across China, and relationships with Shanghai municipal intelligence and party organs. The study highlights that while the unit is internationally known for cyber espionage, its broader infrastructure supports an expansive signals intelligence (SIGINT) and communications interception mission.