
Continuity mistake: Just after Norman has been made to shoot the German, he lies on the floor with his face buried in his arms. Camera cuts and his position has changed and you can now see his face. (00:39:20)

Continuity mistake: When Norm takes the picture off the post in the tank near the start, the way he holds it changes between shots from the extreme corner to further down. (00:15:40)
Answer: Although he starts out afraid, awkward and hesitant, Norman gradually becomes battle-hardened throughout the film. But there is one event that probably changes Norman more than anything: When his one-night love interest, Emma, is killed during a German attack. After that, the tank crew realises that Norman has changed, become harder and more focused, and they finally accept him as a team member with the nickname "Machine."
Charles Austin Miller