It got the Bolsheviks to take over, and one of their main goals on international stage was to estabilish Communism in Germany. They didn't get to it only because they were defeated by Poland in 1920, and you can't get to Germany without conquering Poland first. So, Germans funded a party that nearly started a war with their own country. That's a hell of a gamble.

The story doesn’t end there though. After that, what the Bolsheviks created utterly destroyed Germany then occupied it for 40+ years.