The Landser of 1939 is the direct heir to that of 1918 and the Heer (army) plunges its roots, its traditions and its uniformological specificities into those of the imperial armies of past centuries: the Gebirgsjäger are the descendants of the Austrian mountain troops , the tankers those of the Prussian hussars; we find the Litzen of Frederick II's troops on the collar tabs of Heer soldiers, etc. Even the Waffen-SS, whose chiefs disapprove of the conservatism of the army, will appropriate their military traditions, giving some of their units the name of a German reiter, lansquenet or dynasty. Knowing these details makes it possible to "read" a vintage photograph: recognizing a unit, an outfit, a weapon or a decoration, can be used to date a photograph, to know where it was taken, to understand what it represents. With this book, we wanted to help the amateur by offering him a guide to the Landser as comprehensive and clear as possible. The first part decrypts the uniform of the German soldier and that of the Waffen-SS by popularizing the symbolism of the outfits, the ranks, the headdresses, the camouflage, the individual equipment and all the exceptions which very often correspond to military traditions. The second part lists the main decorations received and worn by Heer soldiers. Finally, a final part details the arming of the Landser, from the Lüger P08 to the Panzerfaust, via the Tellermine or the MG-42 and other Schmeisser and Mauser. FRENCH Language book.