The 1920s were a transitional time for worldwide tank building. The end of the First World War resulted in a radical decrease of military budgets. Many vehicles were created as designers and commanders ruminated on the experience from the previous war, but most of them remained prototypes.
Italy joined the tank builders' club with its Fiat 3000 light tank, as did Sweden (with what really were German tanks). The USSR continued to develop tanks as well. The Russian Renault, a copy of the Renault FT, was followed by an original tank: the T-18, aka MS-1.
In search of a suitable solution
Trials of the first Russian Renault tank named Freedom Fighter Comrade Lenin took place on August 31st, 1920. 15 such tanks were built at Sormovo in total. These were the first tanks of the nascent Soviet tank building school.
The military was not satisfied with simply copying foreign tanks. French tank designs were not entirely satisfactory for the battles that raged across the former Russian Empire. The Russian Civil War was quite maneuverable and WWI style tank attacks were rarely possible. Armoured cars were much more suitable. They may have had poorer off-road mobility, but better agility and range.
The Red Army established a classification system for tanks by 1921. Captured Mark V tanks were classified as Category V: breakthrough tanks. The Mk.A Whippet and Mk.B Hornet were classified as Category S: maneuver tanks.