Can anyone help me with working out what this film is?

[Daisypod]

My son remembers a World War 1 film where there are two young soldiers, one English and one German. They were friends but at the end of the film have to both go over the top and end up fighting each other. Sorry not a huge amount to go on, any ideas?

Into the white?

No not that I'm afraid, it's only a few years old I think

Ooh I think I know this! Not a film but a mini series on bbc I think it was called the passing bells?

The passing bells? It follows the story of a German and English soldier who eventually meet on the battlefield.