Try to do them by category, if you can, otherwise pick best over all. I'm unsure really how this works, so do explain your choice, and why it was so effective compared to others at the time.
Besides that, it has to have had wide spread usage in World War 2, so nothing that was made on the tail of the conflict that got very little usage, for example.
Now, go!
Besides that, it has to have had wide spread usage in World War 2, so nothing that was made on the tail of the conflict that got very little usage, for example.
Now, go!