I always found the extraordinary loss of life in the First World War very moving. I remember learning about it as a very young child, as an eight- or nine-year-old, asking my teachers what poppies were for. Every year the teachers would suddenly wear these red paper flowers in their lapels, and I would say 'What does that mean?'

Heath Ledger's performance in 'The Dark Knight' quite simply changed the game. He raised the bar not just for actors in superhero films, but young actors everywhere; for me. His performance was dark, anarchic, dizzying, free, and totally, thrillingly, dangerous.

It's like playing tennis, you play a different rally with different people. Every actor is different and the chemistry between actors is different.

I'm an eternal realist and the success rate for being an actor is pretty low.

I used to do Civil War re-enacting between the ages of 15 and 19. I was part of a unit that was considered very authentic. We would source the right wools, the right buttons for the costumes. We had the right look.

The connection between dress and war is not far to seek; your finest clothes are those you wear as soldiers.

To be straight, I was kind of a dork, and in order to fulfill the creative fires burning inside me, I participated vigorously as a Civil War re-enactor through most of my teenage years, traveling across the country to participate in large scale reenactments - grandiose plays enacted by over weight history buffs and war enthusiasts alike.

A nation's ability to fight a modern war is as good as its technological ability.