The 4th State Central Interspecific Test Site, commonly known as Kapustin Yar, is situated in the Astrakhan Oblast of the Russian Federation. This strategic facility occupies a vast area in the semi-arid steppe between Volgograd and Astrakhan, providing an isolated environment suitable for sensitive military testing. The site's remote location minimizes the risk of civilian exposure and facilitates the containment of classified activities, including missile launches and advanced weapons trials.
Kapustin Yar operates under the jurisdiction of the Russian Ministry of Defense and is designated as military unit 15644. The site encompasses several subordinate units, each with specialized functions. These include the 28th Separate Engineering and Testing Unit (military unit 31925), the 30th Separate Engineering and Testing Unit (military unit 52910), and the 35th Separate Mixed Aviation Squadron (military unit 33782), among others. Each unit contributes distinct technical and operational expertise, supporting the site's multifaceted testing and evaluation missions.
The test site is equipped with extensive infrastructure to support a wide range of military experiments and trials. Facilities include missile launch pads, telemetry and tracking stations, underground bunkers, and specialized laboratories. The presence of the 35th Separate Mixed Aviation Squadron, operating Mi-8 helicopters and An-26/An-72 transport aircraft, enhances logistical flexibility and rapid deployment capabilities. The site also maintains secure communications and data transmission networks, as evidenced by the 144th Transmitting Center (military unit 39216).
Kapustin Yar serves as a central hub for research, development, and testing of advanced weaponry and military equipment. The 708th Interspecific Air Defense Equipment Research and Testing Center (military unit 29139) and the 788th Ground Forces Military Equipment Research and Development Center (military unit 21065) are instrumental in evaluating new air defense systems and ground force technologies. These centers conduct rigorous trials to validate performance, reliability, and integration with existing Russian military doctrine.
The site also fulfills a critical role in the training of military personnel. The 60th Missile Troops and Artillery Combat Use Training Center (military unit 47209) provides specialized instruction in the operation and tactical employment of missile and artillery systems. Additionally, the 161st Strategic Missile Forces Technicians School (military unit 75376) offers technical education for missile forces technicians, ensuring a continuous pipeline of qualified personnel to support Russia’s strategic deterrent capabilities.
Robust communications infrastructure is maintained at Kapustin Yar to support command, control, and data dissemination. The 144th Transmitting Center (military unit 39216) is responsible for secure transmission of sensitive information, while the UUB (military unit 21043) and the Radio-Technical Site P-37 provide additional electronic support, including radar tracking and electronic warfare capabilities. These assets are critical for real-time monitoring of test activities and for maintaining operational security.
Kapustin Yar is characterized by stringent security protocols, including restricted access zones, perimeter surveillance, and internal counterintelligence measures. The site's operational secrecy is reinforced by its geographic isolation and the compartmentalization of activities among various military units. These measures are designed to protect sensitive technologies and prevent unauthorized disclosure of classified information related to Russia’s strategic weapons programs.