http://www.jedsite.info/tanks-tango/...it1-intro.html
The IT-1 (Lit; istrebitel tankov = tank hunter) aka 'raketniy tank' or 'ob'yekt 150' was developed between 1957-1962. This tankhunter, based on the chassis and hull of the T-62 and was fitted with a new turret with stabilised anti-tank system TURS 2K4, day/night sights T2-PD and UPN-S. It carried 15 PTUR 3M7 'Drakon' ATGM (3 reserve and 12 in the automatic loader) was radio-guided (semi-automatic) with a range between 300 and 3,300m. Secondary armament consisted of a 7.62mm PKT with 2,000 rounds. The IT-1 was the only rocket tank that ever actualy entered service with the Soviet forces. They were in production from 1968 - 1970 by various companies, and 20 additional vehicles were produced by the Uralvagonzavod factory in 1970. Only two battalions operated them [one with artillery personnel and one with tank] with one battalion in Belarus MD and the other one in the Carpathian MD. This means that there weren't more than around 60 vehicles The units were disbanded after the withdrawal of IT-1 and all the vehicles were reportedly converted to ARVs after they were withdrawn from use.
other sources claim they were mothballed but in Category 1 readiness with the crews trained in regular T-62's and they were finally offically withdrawn in the "late 70's" which from a game perspective fits well with the existing SP atgm formations that start 1/79