I can't see how you would be able to retrieve your old passport. If they have partially processed your application, then they may have also cancelled your current passport in readiness to issue a new passport. So as you say I think it's down to queueing and hoping they can find your application and process it for you on the day.
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.