Unfortunately, what is shown when the ComboBox is closed is completely unrelated to the ItemTemplate (which is what is shown when the dropdown is shown).
You can use custom template for your combobox on the whole as said by RobSiklos, but I think you can do that in xaml itself, writing custom template, use overridedefaultstyle property, use the Textbox instead of Textblock in the content presenter as again, said by RobSiklos.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.