The Jerrycan, prolific in its use for nearly 80 years after its birth, deserves a specific and thorough study of its origins in Germany. Never addressed in a single work and prefaced by the grandson of one of the founding developers of the receptacle, with the variety of gas and water cans illustrating its widespread diversity. Here we have presented the most common to the most rare in a single catalog containing about 150 models. Multiple manufacturers are presented here by chapter with brief histories of each, from automotive suppliers, coachbuilders, producers of kitchen utensils, industrial conglomerates, etc. The Wehrmacht Kanister 20 liter develops all the themes appropriate to this revolutionary canister: from the original offering of the 1936 WaffenAmt to post-war manufactures and industrialized uses, incidental accessories to export models and markings painted on the drums during the fuel shortages of the Third Reich. Fifty unpublished period photographs present the distribution chain and the use of the Kanister in the Wehrmacht. Various profiles and charts complement this book.