A great site with many exceptionnel armorured vehicles. http://www.mvcgfrance.org/menu2/vehicules_exception/tech_che_ue.html
Never noticed that added shield on German Chenilletes. Makes more sense than the weird standard 'bubbles'. Lovely to see anything in what looks like untouched contemporary paintwork.
If I remember correctly, these were used by the Germans to pull their towed AT guns. Apparently, they couldn't stand up to Russian conditions and most crumbled for lack of spare parts.
Great find. Interesting ideas during the war. I guess Alfred Becker was a true experct in making different versions. https://en.wikipedia.org/wiki/Alfred_Becker