The m.Zgkw.8t was one of the most important German military vehicles. Due to impressive size and the weapons they towed, they capture the imagination of all. Over time they faded into the background, though they were produced in ever increasing numbers. The Panzer Tracts team has produced a remarkable story supported by primary sources. Many m.Zgkw.8t have survived in public and private collections, including examples of all the chassis types. Several hundred hours were spent travelling and precisely measuring each, and over one thousand hours were expended to create accurate drawings. Our primary research also yielded numerous previously undocumented modifications. Including the history of the Trattore Semicingolato 8t which Breda was licensed to build for the Italian army. This 88 page Panzer Tracts is the ultimate accurate primary source reference on the m Zgkw.8t (Sd.Kfz.7) with over 15 Pages of 1:35 scale drawings and 109 clear, large-format, photos most of which have never been published.