Sturmtiger 38cm - or  Sturmmörserwagen 606/4 mit 38 cm RW 61 was one of the few specialized vehicles built in serial production on the Tiger I chassis.  Nineteen of these were completed; they were organized in platoons of four, but seldom operated in units larger than two at a time.  They were first fielded in October, 1943 and their primary mission was to fire massive rockets to support infantry in urban warfare.  Two were used in the Warsaw Uprising in August, 1944; seven were used in the Battle of the Bulge, and again at the Bridge at Remagen. This is a plastic kit.