On 6 June 1944, American, British, Canadian and Free French forces invaded German-occupied Normandy in northern France. This is known as D-Day. In less than a month more than 850,000 troops had landed in Normandy. The objective was the liberation of Europe.
Just a few days later, on 22 June 1944 Soviet forces began a major offensive in the East. By August 1944, they had succeeded in gaining control of Central Poland.
As the Soviet army fought their way westwards they uncovered many hundreds of Nazi concentration camps. On 23 July 1944, the Soviet army liberated the death camp of Majdanek, near Lublin in Poland.
The SS had already evacuated the majority of the prisoners to the west. However, they had not destroyed all evidence of mass murder.
Knowing that the Soviet army was advancing, those prisoners who were fit enough to walk were evacuated West. Starting on foot, they were then placed on railway wagons and sent back to Germany. Thousands of people died in what became known as the 'death marches'.
On 27 January 1945 the Soviet army liberated the largest camp of all, Auschwitz-Birkenau. When the Soviets finally arrived they found only 7,650 people alive in Auschwitz. Many of these were young children.