Hitler's Romanian allies collapse

21st November 1942: As the Red Army moves to complete the encirclement around Stalingrad the Germans struggle to understand what is happening

Red Army tanks advance during Operation Uranus.

With over a million men committed to Operation Uranus, the Soviet Army was able to attack in far greater strength than the Germans thought possible. The opening moves on the 19th November from the North were followed by another major thrust from the South launched on the 20th. The brunt of the attack fell o…