The Blue bar as you can say is like More Armour to get the blue line go to create a character mode and choose a character and scan through Equips while looking at its stat bar on the right it will be blue if it says it increases and red if it decreases your health/armour.
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.