Watched the Terence Davies biopic of Siegfried Sassoon on BBC Iplayer last night.
A good watch although it didn't give me an understanding in any great depth of what motivated his writing.
Concentrated rather too much on his dalliance with Ivor Novello, (I say dalliance, it was on Novello's part, rather more than that for Sassoon) who judging by the film presentation of him wasn't a very pleasant man.
It only gets a middling 6.7 on IMDB, worth more than that just for Davies's style, I would say.