Roache said: “We’ve all heard the stories about the male heroes – but we’ve not heard much about these women who put themselves directly on the line without much training.”
Going on to detail getting under the skin of historic character Buckmaster, he said: “I love playing characters with big moral dilemmas, trying to figure out what to do next.
“They were sort of intensely focussed scenes – and it was a joy as an actor to be able to do all those scenes in one week.”
Roache went on to say: “You don’t know what it’s like to go to war unless you’ve been to war, [so] I tried to put myself in that situation.
“And it really helps when you have a wonderful actress to work with, so it doesn’t feel like you’re just faking it.”