The Main gate or Guard Tower "A", with its 8mm Maxim machine gun, the type used by the Germans in the trenches of World War I, housed the offices of the camp administration. On the front entrance gates to Sachsenhausen is the infamous slogan "Arbeit Macht Frei" ("work makes (you) free"). About 200,000 people passed through Sachsenhausen between 1936 and 1945. Anchoring the base of the triangular shaped thousand-acre site was the large "Appellplatz", where tens of thousands of prisoners would line up for morning and evening roll call. Creating a semi circular configuration, were the barracks of custody zone which fanned out from the base of the "Appellplatz".