This story originally appeared in the August 2014 issue of National Geographic magazine as "The Hidden World of the Great War." In honor ... vast warren to their frontline trenches.

The programs features first-hand accounts of the war with key political and military leaders in the U.S., in the Allied Coalition, and Iraq, as well as soldiers on both sides of the front line.

Now, five years later, FRONTLINEs gives an authoritative account of the events of the war from those who planned it and those who fought its battles in "The Gulf War," airing Tuesday and Wednesday ...

A poster portraying the “Second Patriotic War” as World War I was known in ... which called for Russians to donate books for frontline troops. A call for donations for “maimed” fighters.

The true human cost of war can also be recalled by looking at some of the art created during, and in the aftermath of, the First World War. Painters such as Paul Nash and Constance Oliver lived ...

“I look back at these drawings from so long ago and can still feel the sub-zero temperatures,” said Linda Kitson. The National Memorial Arboretum, in Staffordshire, has opened a new free ...