Captain America (The First Avenger): Hair Needs To Be Up Here
Hayley Atwell was undeniably beautiful in the first Captain America installment, but Peggy Carter’s pin curls simply had no place in the army. While it is actually accurate for the period, service in the military still required longer-haired women to wear it up.

Captain America
People who enjoy watching movies that involve the military would be aware that hairstyles like that are not permitted on duty during those times, despite the fact that this was such a minor point brought up in the film.