A volume in the "Technology @ War" series. The BTR-50 was the first tracked armored personnel carrier to enter service with the Soviet Army. Based on the same chassis and powertrain as the amphibious light tank PT-76, the BTR-50 was designed as an armored personnel carrier andinitiallyalso as a gun-carrying vehicle, enabling medium-caliber divisional and anti-tank guns to be fired directly from the vehicle during offensive operations. Changes in nuclear doctrine led to the replacement of the originally open-topped BTR-50P by the fully enclosed BTR-50PK, a transition that saw the abandonment of its original role as a gun platform. However, the BTR-50 family evolved far beyond the standard personnel carrier configuration; for instance, the BTR-50PU series was widely deployed by the Soviet Army as a command vehicle, alongside other specialized variantsincluding the MTP maintenance vehicle and the UR-67 mine-clearing system. Moreover, the BTR-50 was the specific tracked armored personnel carrier used by the Soviet Army to train in combined arms tactics. This provided the trainingand subsequently the combatexperience that ultimately led to the development of a new class of armored fighting vehicles: the BMP-1 infantry fighting vehicle, in which the crew was able to engage in combat from within the vehicle before dismounting to fight on foot. The BTR-50 series remained the backbone of the Soviet Army's tracked armored personnel carrier fleet until it was superseded by the BMP-1 in the late 1960s. The BTR-50 was exported on a large scale and saw combat in the Middle East, Africa, and Asia; surprisingly large numbers remain in active service to this day. This book was written and illustrated based on original Russian and Ukrainian sources.