List of main battle tanks by generation

Columns: Name | Entered service in | Origin | Notes
T-62 | 1961 | Soviet Union | A further development of the T-55 | M60 Patton | 1961 | United States | A further development of the M48 Patton tank . Later models ( M60A2 and M60A3 ) are considered as the first intermediate generation | Leopard 1 | 1965 | West Germany | A main battle tank designed and produced in West Germany that first entered service in 1965 | Panzer 61 | 1965 | Switzerland | A further development of the Panzer 58 tank | MBT-70 | 1965 | United States / West Germany | An American-West German joint project to develop a new main battle tank . Never entered service | T-64 | 1966 | Soviet Union | World 's first composite armored tank , later versions of the T-64 may be considered as third generation | AMX 30 | 1966 | France | The AMX 30 served as the principal Main Battle Tank ( MBT ) for the French Army

Example questions:
What is the name of the second generation battle tank whose origin consists of four constituent countries ? | What is the name of the second generation battle tank whose origin had its roots in the 1917 October Revolution ? | What is the name of the second generation battle tank whose origin consists of 50 states ? | What is the name of the second generation battle tank whose origin is a unitary parliamentary democracy and constitutional monarchy ?

Answers:
Vickers MBT | T-64 | M60 Patton | FV 4201 Chieftain