However, the machine's calibration was off and I ended up arriving toward the end of WWI. I decided that rather than return to my starting time and try again, the best thing to do would be to try and get the rest of Europe to be less punitive toward Germany (and, thus, ideally not set the stage for the resurgence of German nationalism that contributed to WWII).
I have no idea why I thought, in the dream, that I had that kind of power!