IF it was copyrighted, It shouldn't be uploaded on youtube, It will automatically blocked and warned you that it's a copyrighted material. It is copyrighted, but they screwed up the copyrights on that soundtrack on that anime so I don't really think its copyright protected anymore, its an old soundtrack, note "I will not be responsible.
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.