Atheists are not a religion and cannot be considered and answer. However, the ancient Greeks believed that the human soul was impermanent and eventually wore down to nothing after death. Buddhism is a religion and which believes that the eternal part of a person may go to Nirvana an egoless and selfless condition where there is no discernible "you.
A "religion" is a belief in God (called different names depending on the religion, such as 'Allah' for Muslims), and those are the ones who believe there is an eternal afterlife with God after death. Those who believe "when you're dead you're dead" are atheists and do not believe in God. And since atheism is not a religion, there are no religions that fit the definition of your question.
Actually the truth is that there is life after death. The earlier one has knowledge of this, the better he is prepared for the journey when the time comes. Whatever decisions or belief we hold here affects the outcome of our life after earth.
Some Atheists, some Agnostics can believe that once you are dead you are dead.
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.