Michael Smallwood
An image posted to social media at the beginning of August shows Ukrainian troops atop a tracked 9K35 Strela-10 armoured fighting vehicle (AFV) (NATO reporting name: SA-13 Gopher), with two Soviet B-8 rocket pods fixed in an improvised turret arrangement. It appears Ukrainian forces have developed an improvised multiple-launch rocket system (MLRS) on the tracked vehicle. Typically launching 9M37 surface-to-air missiles, this vehicle has now been modified to fire S-8 series air-to-surface rockets, employed in a surface-to-surface role. The S-8 rocket, whilst not ideal for this role, may have some advantages in the current conflict.
http://armamentresearch.com/improvised-80-mm-s-8-mlrs-system-in-ukraine/