His age makes no difference. More info is needed to be able to fully answer your question though. From the info you have posted though, my best guess is the brother likely just finished A school and is going home for leave prior to reporting to his duty station.
Of course if he's already at his first command (depending upon his rating) and is getting ready to deploy, they could be returning from work ups.
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.