The Pak 36 (Panzerabwehrkanone 36) was a German anti-tank gun that fired a 3.7 cm calibre shell. It was developed in 1936 by Rheinmetall and first appeared in combat that year during the Spanish Civil War. It formed the basis for many other nations" anti-tank guns during the first years of World War II. The Kw. K. 36 L/45 was the same gun but was used as the main armament on several tanks, most notably the early models of the Panzer III. It was employed by Finnish troops during World War II, notably during the Defense of Suomussalmi.
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