During its production life, many variants of it was made for different purposes, up to 53 different ones to fit different roles, though only 23 would see service in production. Such designs included changes like a twin-turreted version (some with only machine guns and some with cannons), command tanks, added armour, artillery tanks (such as the T-26-4), flamethrower tanks, remote-controlled tanks, or just armoured carriers to tow artillery and such. Others were simply modified variants of the normal variants such as the T-26E, which was the base single-turreted T-26 design with 30-40 mm applique armour made during the Winter War, which made them more resilient to the Finnish anti-tank weapons.