It was Kaiser Wilhelm II who sent Lenin and 32 other bolsheviks on a special sealed train to Russia for the intent of getting Russia out of the war. Everything ended up with the Romanovs murdered and Kaiser Wilhelm bundled off to Holland to die in exile in 1941.
It was a war where the assumptions of literally everyone in power were smashed down and their arrogance was laid low.
The only country who benefitted from WWI was the United States, the least-affected combatant.
fl8r