It is complicated to answer which magazine in the film genre sells the most copies because it depends on whether or not you count the gossip rags. If you are a Hollywood insider the answer is the Hollywood Reporter and Variety as these are trade magazines. This is where you would find the most up-to-date information as well as stay way ahead of the game on what is coming out.
The general public magazine that sells the best is People though some do not consider that only an entertainment magazine. Entertainment Weekly is the most popular dealing with stories about the new films and television coming out. US Weekly also has a decent review section but digresses to gossip more often than not.
Film Magazine, Independent Film, and Premiere are also quite popular. These are bit more focused on providing deep insight to the filmmaking process getting into technical details as well as the "fun" stories behind the scenes. There are 100's of magazines focused on the entertainment industry between all the specialties.
These are the most popular for those with a general interest.
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.