Built in large numbers at the Stalingrad Tractor Zavod, the STZ-5 provided welcome chassis for the newly developed BM-13-16 Rocket launchers.
It saw its first action at the successful Moscow counter-offensive in winter 1941 and also excelled at Operation »Uranus«, the encirclement of the German 6th Army at Stalingrad in November 1942.
However, the »M-6-20-57« shown here would not take part at the latter as it was captured intact during the ill-fated Operation »Mars« near Kharkhov in May 1942.