Object 268

Object 268 was one of the last Soviet attempts to build a heavily armored casemate tank destroyer after the Second World War. Developed in the 1952-1956 period around the T-10 heavy tank base, it tried to continue the SU/ISU assault-gun tradition with a more powerful gun and postwar protection. The project reached prototype and trials stage but arrived when the battlefield was moving toward guided missiles, more flexible main battle tanks and lighter anti-tank systems. Its cancellation reflects the end of the heavy assault-gun lineage rather than a simple failure of one prototype.

The Object 268 used a turretless layout with the main weapon mounted in a casemate, giving it strong frontal protection and room for a large 152 mm gun. The M-64 was intended to provide high penetration and destructive effect against armored targets and fortifications. The fixed superstructure simplified some protection choices but limited traverse and made target engagement dependent on hull positioning. Compared with turreted tanks, it traded flexibility for gun power and frontal survivability. That trade became less attractive as postwar tank design emphasized mobility, stabilized weapons and all-round tactical responsiveness.

Operationally, Object 268 never served as a fielded Soviet vehicle. Its surviving relevance comes from prototype testing and preservation as an example of postwar Soviet design thinking. It shows how designers tried to adapt wartime tank-destroyer logic to the early Cold War, only to encounter changing doctrine and technology. In a database context, it should be marked as a prototype: useful for understanding Soviet armored development, but not a vehicle with combat deployment, unit issue or sustained logistical history.