Christopher Nolan is known for his meticulous attention to detail. Even going as far as using real naval destroyers instead of CGI in his upcoming film, Dunkirk

However it looks like there was one small thing he overlooked in the beautiful first teaser for the World War II epic. 

Did you spot it? It happens during the final shot of the teaser. There's one extra that is behaving a little too happy go lucky for a soldier in the midst of one of the most famous battles in World War II. 

He's smiling! He's actually smiling.

Maybe we're just being too pedantic but it would have been a damn near perfect teaser if it wasn't for that extra's distracting gaffe.

Via Independent UK