The M26 Pershing provided a much-needed boost to the fighting capabilities of the American armored units. The Panthers and Tigers; The nemesis’ of the good old M4 Sherman, were no longer untouchable.

Despite its significant capabilities, the M26 still faced challenges when confronting the Tiger II heavy tanks or King Tigers.

To match the formidable firepower of the Tiger II's 88 mm KwK43, the 90 mmT15E1 gun was developed and then installed in a T26 tank, in January 1945.

This tank was designated T26E1-1 and later was known as the Super Pershing.

A single Super Pershing tank was transported to Europe and underwent modifications by the maintenance unit, which included adding extra armor to the gun mantlet and front hull. The tank was later assigned to one of the tank crews of the 3rd Armored Division.

An account of the combat actions of this tank appeared in the war memoir - Another River Another Town by John P Irwin, who was the tank gunner.

On 21 April, the Super Pershing was involved in a short range tank duel with a German tank identified as a Tiger which it knocked out with a shot to the belly.