The failed MBT-70 main battle tank was a cooperative program that tried to accomplish too much but contributed to later tank development.
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Army Analyzes Next-Generation Abrams Tanks for 2030 with the AbamsX - Warrior Maven: Center for Military Modernization
Brendan McNally Defense Media Network
FCAS SCAF et connexes (NGWS, drone FCAS - DP etc.) - Page 264
Oct. 10, 1967 - New U.S. German Battle Tank; This is the new 50 ton MBT 70 battle tank, a joint United States West Germany development, seen during a demonstration in Augsberg.
MBT-70 Cupola incorrectly modelled - Documented Ground Reports
The MBT-70 Main Battle Tank Program
MBT 70 - KpfPz. 70
Military Museum Of Southern New England - MBT-70 Main Battle Tank
MBT 70, a cold war mistake, Aurora, 1/48 - iModeler
MBT-70 - Wikipedia
MBT 70 spaced armor is supposed to be a spall liner? : r/Warthunder
MBT-70