IRON RAIN : TOS-1A The Unique Russia Weapons
In service since 2001, Russia’s TOS-1A has proven itself on numerous occasions.
Due to its unique capabilities, the system was never assigned to Russia artillery units, and instead operates as part of the country’s Radiological, Chemical and Biological Defence Troops.
based on the chassis of a T-72, Russia’s most numerous tank, and uses a formidable 840 HP engine.
Source : https://goo.gl/ji3XV3