Celebrations erupt across the world as the war ends in Europe. It is VE Day (Victory in Europe Day). But it has been a long, hard race to get here... and war is still raging in the Pacific.

On New year's Day 1942 representatives of Britain, the USA and USSR signed the United nations Declaration, pledging to align together to defeat the Axis powers.

In 1943 mass graves filled with the corpses of thousands of Polish military officers are discovered by German forces. These were not the victims of Hitler's Holocaust but evidence of the Soviet Union's take over of Poland.

After a year of fraught relations and tension, the "Big Three" leaders meet in Tehran in an attempt to find the unity needed to help the Allies win the war.

More than 156,000 British, American and Canadian soldiers are transported across the English Channel in the largest seaborne invasion ever attempted; "The Big Three" come face to face for the second -- and last -- time in the seaside town of Yalta.

The Allies agree to meet to decide what the future will look like after the war finally comes to an end; The Big Three come face to face for the second -- and last -- time in the seaside town of Yalta.