Most dreams are messages from the subconscious mind. You are just processing daily thoughts, feelings and events in the dream. Christmas is usually a happy time with gifts and family.
However, the fire usually indicates anger issues. These issues burn his house and then your nan's. Why did you break up?
Walking through the fire without getting burned indicates being tested somehow - you pick up a childhood animal. I think you are processing some of the issues with your ex that led to the break up.
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.