"Report From Yan'an," a documentary film shot from the perspective of military leaders, journalists and government officials of the US and UK during World War II, will air on the Documentary Channel over the weekend.

The film provides insight into the war and shows how China plays a major role in the Allies' victory against Japan.

Producers of the film said it took 17 years to gather abundant materials about that period of history. Some valuable sequences and secret files are released for the first time in the documentary.