Here is a bit of History behind the Cache.
On the 23rd of April 1942, Germany and her allies of Romania, Italy, Hungary and Croatia with a number that would reach 1,040,000 troops attacked the Russian city of Stalingrad (Now called Volgograd) who would throw 1,143,000 troops to defend the city. The German operational goal was to take the city of Stalingrad and the Russian oil fields to the south of the city. After three months of fighting Germany had reached the Volga River and had 90% of the city occupied. The river at this time was not able to be crossed and there were still pockets of Russians fighting in the German controlled areas. Over the month of November 1942, Russia launched a Counter Attack on the German Flanks of the city. By the 23rd of November 1942, 265,000 German troops were trapped inside the Russian city. Germany’s Air Force Commander, Hermann Goring started to re-supply the trapped German troops in Stalingrad. In December 1942, Germany tried to reached their trapped men but by the 23rd of December 1942 they were stopped and forced to fall back. On the 22nd of January 1943 the German Air Force stopped re-supplying the trapped German troops. Paulus, the German Commander in Stalingrad was promoted to Field Marshal on January 30 1943 by Hitler. No German Field Marshal had ever been captured or surrendered so far in this war. On the 2nd of February 1943 Paulus surrendered himself and the remaining 91,000 German troops to the Russians. He was the first German Field Marshal to do so in the War. This was one of the Turning points of the war in Europe.