Casualties now, or even more casualties in the future to repel the next invasion by the next Hitler, or the next Napoleon, or the next Frederick the Great, or the next Charles XII.
The problem in the modern age is that the large banks and large corporations fund both sides.
Anthony Sutton’s classic books:
https://www.amazon.com/Wall-Street-Hitler-Antony-Sutton/dp/0945001533
https://www.amazon.com/Wall-Street-Bolshevik-Revolution-Capitalists/dp/190557035X