In Poland, in 1926, a Renault FT 17 tank underwent several modifications in accordance with the plans of Captain Janowski, of the School of Tanks, in Warsaw. The light tank had its turret removed, with the adaptation of equipment to produce smokescreens for the battlefields. The chemicals suitable for the generation of smoke were transported in two large oblong tanks, attached to the sides of the tank hull and in cilinders inside the hull. The Renault FT 17 z Fumatorami was born.
The entire project was executed in cooperation with the Military Institute of Gas Studies. The field tests were carried out from July 5, 1926 in the test grounds of the School of Tanks, in Rembertowie.
At the time the pics spread the idea that the tank would be used to spread gas as a chemical warfare weapon and not in its original function that would be the formation of smokescreens to obscure the vision of the enemy. After several tests, it was decided to abandon the project in 1928.