This is a great kit that Dragon has produced and it’s a joy to assemble!
Background
The Opel Blitz Maultier (“Mule”) platform was developed in 1942 to deal with the lack of paved roads on the Eastern Front in Russia, and was produced until 1944. An Opel Blitz wheeled truck chassis was modified by replacing the rear drive wheels with caterpillar tracks. The Maultier half-track Sd. Kfz.3 chassis was used with a cargo truck bed, antiaircraft gun mount, and truck bodies used for offices, workshops, & the Maultier ambulance.
Dragon has produced a previous Sd.Kfz.3a Maultier Half-Track kit, #6761 with a cargo truck body. Testors, Revell, and Italeri have also produced kits of the Opel Maultier with a cargo body in 1:35 scale.