This Seems Intoxicating & Terrifying (Oh Did I Mention Terrifying?)

GMy Great War, as part of the BBC 4-year WWI Centenary season:

In 1964, the BBC filmed hundreds of hours of interviews with the veterans of World War One – and the result was a 26-part landmark series, The Great War. This series only used a fraction of the interviews shot. The Great War is a new film based on this unseen archive, and tells, with the directness of living testimony, what it was like living and dying on the frontline. 

From its IMDB page:

One of the greatest achievements of television -broadcast from 1964 in 26 episodes. Use of extensive archive footage and sound effects, linked with contemporary classic music of that area. Concentrated by the commentaries by Michael Redgrave, and some of the finest male actors of the twentieth century. Still manages to be breathtaking despite the lack of special effects or modern gimmicks. 

- Nick Gunning

Here's the first episode, looks like you can YouTube through the whole damn thing.