War Machine, Episode 3 of Our World War will show on BBC3 on Thursday 21 August at 9pm.
The series is based on real stories told by troops who fought in World War 1. War Machine tells the story of the Battle of Amiens, and Ryan plays an Officer based on Captain Gilmour, Section Commander of 14th Battalion of the Tanks Corps.
"Excellent, innovative, moving television – I think the best, and most affecting, of the first world war programmes I've seen so far." The Guardian