more at US Army Training Film (Field Bulletin) on the M26 Pershing Tank, which was called the T26E3 .\rbr\rbrT26 heavy tank, or is it T-26, which became the M26 Pershing. The T26 heavy tank. It is characterized by a sloping V-shaped front and a very low silhouette.\rbr\rbrmore at US Army Training Film (Field Bulletin) on the M26 Pershing Tank, which was called the T26E3 .\rbr\rbrmore at US Army Training Film (Field Bulletin) on the M26 Pershing Tank, which was called the T26E3 . T26 heavy tank, or is it T-26, which became the M26 Per.