It all depends on how big your sculptures will be. I'd suggest a metal craft wire of 16-22 gauge. (The higher the number the smaller the wire.) You can find it on the jewelry supplies aisle of a crafts supplies store.
Get a regular wire cutter to cut it. I recommend a 6" to 8" diagonal pliers that you can gt at a hardware store for $2. - to $5.
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.