T-28 Super Heavy Tanks

The T28 American heavily armored tank/self-propelled gun designed for use during WW2. The near 100-ton vehicle was initially designated a heavy tank. It was re-designated as the 105 mm Gun Motor Carriage T95 in 1945, and then renamed in 1946 as the Super Heavy Tank T28.

Development

The T28/95 used the mechanical supercstructure of the T32. It had 2 tracks on each side and extremely thick armor. The T28/T95 was designed to be used for attacking the heavy defenses expected of the Siegfried Line along the western borders of Germany. The 105mm T5E1 gun selected was known to have very good performance against concrete and "expected to be extremely effective at reducing heavy fortifications" After the vehicle passed trials, the German Siegfried Line had already been infiltrated and overwhelmed by the Allied forces, so the designers decided to have the T28/T95 tanks to fight on the Japanese mainland later in the war.

Japan surrendered before the tank was able to be transported overseas. By the time the first tank was completed and ready for combat, the war was over.The plan for five was reduced to two. As it did not have a turret, but a fixed casemate mount instead for its main armament (as German Jagdpanzer combat vehicles did), and the 105 mm gun fitted could only elevate from 19.5° to −5° and traverse from 10° right to 11° left of the centerline. 2 prototypes of the project were built and tested at Abardeen Proving Ground. 1 of them got extremely damaged due to an engine fire at Yuma Proving Ground and was sold for scrap. The T28 never went into service due to the obsolete design, high maintenance costs, and the heavy weight, which prevented it from being transported across seas, but was retained to test the "durability of components on such a heavy vehicle". The project was terminated in Oct 1947

It wasn't used in active combat

info gathered by - Strv 74#3976 from defence matrix discord
source - wikipedia