I might suggest you actually do a little research on what the eternal flame expresses...
There is one in the tomb of the unknown soldier in the Arc de Triomphe in France...
You actually think these nameless soldiers are damned to hell because of a flame on top of their grave...?
You actually think having a cross on your gravestone is indicative of your final place...
When in a Christian nation a Catholic family chooses flames for a grave symbol that speaks illiteracy about them, and by extension about us.
The Tomb of the Unknown Soldier is nothing but a Pagan symbol, characteristic of the French cultural decline and really a monument only to that.