World War II: Battle of Stalingrad: General Friedrich Paulus sends Adolf Hitler a telegram saying that the German 6th Army is surrounded.

The Battle of Stalingrad was a major battle on the Eastern Front of World War II, beginning when Nazi Germany and its Axis allies attacked and became locked in a protracted struggle with the Soviet Union for control over the Soviet city of Stalingrad in southern Russia. The battle was characterized by fierce close-quarters combat and direct assaults on civilians in aerial raids; the battle epitomized urban warfare, and it was the single largest and costliest urban battle in military history. It was the bloodiest and fiercest battle of the entirety of World War II—and arguably in all of human history—as both sides suffered tremendous casualties amidst ferocious fighting in and around the city. The battle is commonly regarded as the turning point in the European theatre of World War II, as Germany's Oberkommando der Wehrmacht was forced to withdraw a considerable amount of military forces from other regions to replace losses on the Eastern Front. By the time the hostilities ended, the German 6th Army and 4th Panzer Army had been destroyed and Army Group B was routed. The Soviets' victory at Stalingrad shifted the Eastern Front's balance of power in their favour, while also boosting the morale of the Red Army.

Friedrich Wilhelm Ernst Paulus was a German Generalfeldmarschall during World War II who is best known for his surrender of the German 6th Army during the Battle of Stalingrad. The battle ended in disaster for the Wehrmacht when Soviet forces encircled the Germans within the city, leading to the ultimate death or capture of most of the 265,000-strong 6th Army, their Axis allies, and collaborators.

Adolf Hitler was an Austrian-born German politician who was the dictator of Germany during the Nazi period from 1933 until his suicide in 1945. He rose to power as the leader of the Nazi Party, becoming the chancellor in 1933 and then taking the title of Führer und Reichskanzler in 1934. His invasion of Poland on 1 September 1939 marked the start of the Second World War. He was closely involved in military operations throughout the war and was central to the perpetration of the Holocaust: the genocide of about six million Jews and millions of other victims.